Finding the Fourth Proportional to 10,432.55, 15,609.59 and 7,318.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,432.55 : 15,609.59 = 7,318.63 : x
2. Step 2: Convert to fraction form
   10,432.55/15,609.59 = 7,318.63/x
3. Step 3: Cross multiply
   10,432.55x = 15,609.59 × 7,318.63
4. Step 4: Simplify right side
   10,432.55x = 114,240,759.54
5. Step 5: Solve for x
   x = 114,240,759.54/10,432.55
6. Step 6: Final answer
   x = 10,950.42