Finding the Fourth Proportional to 12,475.76, 17,216.10 and 7,437.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,475.76 : 17,216.10 = 7,437.38 : x
2. Step 2: Convert to fraction form
   12,475.76/17,216.10 = 7,437.38/x
3. Step 3: Cross multiply
   12,475.76x = 17,216.10 × 7,437.38
4. Step 4: Simplify right side
   12,475.76x = 128,042,720.86
5. Step 5: Solve for x
   x = 128,042,720.86/12,475.76
6. Step 6: Final answer
   x = 10,263.32