Finding the Fourth Proportional to 12,632.58, 17,432.01 and 7,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,632.58 : 17,432.01 = 7,042.50 : x
2. Step 2: Convert to fraction form
   12,632.58/17,432.01 = 7,042.50/x
3. Step 3: Cross multiply
   12,632.58x = 17,432.01 × 7,042.50
4. Step 4: Simplify right side
   12,632.58x = 122,764,930.43
5. Step 5: Solve for x
   x = 122,764,930.43/12,632.58
6. Step 6: Final answer
   x = 9,718.12