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Finding the Fourth Proportional to 15,818.64, 21,828.62 and 8,744.50

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Solution

The fourth proportional to 15,818.64, 21,828.62 and 8,744.50 is: 12,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.64 : 21,828.62 = 8,744.50 : x
  2. Step 2: Convert to fraction form
    15,818.64/21,828.62 = 8,744.50/x
  3. Step 3: Cross multiply
    15,818.64x = 21,828.62 × 8,744.50
  4. Step 4: Simplify right side
    15,818.64x = 190,880,367.59
  5. Step 5: Solve for x
    x = 190,880,367.59/15,818.64
  6. Step 6: Final answer
    x = 12,066.80

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