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Finding the Fourth Proportional to 18,972.72, 28,459.08 and 6,492.90

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Solution

The fourth proportional to 18,972.72, 28,459.08 and 6,492.90 is: 9,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.72 : 28,459.08 = 6,492.90 : x
  2. Step 2: Convert to fraction form
    18,972.72/28,459.08 = 6,492.90/x
  3. Step 3: Cross multiply
    18,972.72x = 28,459.08 × 6,492.90
  4. Step 4: Simplify right side
    18,972.72x = 184,781,960.53
  5. Step 5: Solve for x
    x = 184,781,960.53/18,972.72
  6. Step 6: Final answer
    x = 9,739.35

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