Finding the Fourth Proportional to 13,592.71, 18,757.89 and 7,624.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,592.71 : 18,757.89 = 7,624.40 : x
2. Step 2: Convert to fraction form
   13,592.71/18,757.89 = 7,624.40/x
3. Step 3: Cross multiply
   13,592.71x = 18,757.89 × 7,624.40
4. Step 4: Simplify right side
   13,592.71x = 143,017,731.72
5. Step 5: Solve for x
   x = 143,017,731.72/13,592.71
6. Step 6: Final answer
   x = 10,521.65