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Finding the Fourth Proportional to 15,916.92, 21,967.98 and 13,260.12

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Solution

The fourth proportional to 15,916.92, 21,967.98 and 13,260.12 is: 18,301.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.92 : 21,967.98 = 13,260.12 : x
  2. Step 2: Convert to fraction form
    15,916.92/21,967.98 = 13,260.12/x
  3. Step 3: Cross multiply
    15,916.92x = 21,967.98 × 13,260.12
  4. Step 4: Simplify right side
    15,916.92x = 291,298,050.96
  5. Step 5: Solve for x
    x = 291,298,050.96/15,916.92
  6. Step 6: Final answer
    x = 18,301.16

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