Finding the Fourth Proportional to 13,402.50, 18,492.71 and 7,432.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.50 : 18,492.71 = 7,432.89 : x
2. Step 2: Convert to fraction form
   13,402.50/18,492.71 = 7,432.89/x
3. Step 3: Cross multiply
   13,402.50x = 18,492.71 × 7,432.89
4. Step 4: Simplify right side
   13,402.50x = 137,454,242.07
5. Step 5: Solve for x
   x = 137,454,242.07/13,402.50
6. Step 6: Final answer
   x = 10,255.87