Finding the Fourth Proportional to 9,376.71, 12,940.04 and 5,398.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,376.71 : 12,940.04 = 5,398.59 : x
2. Step 2: Convert to fraction form
   9,376.71/12,940.04 = 5,398.59/x
3. Step 3: Cross multiply
   9,376.71x = 12,940.04 × 5,398.59
4. Step 4: Simplify right side
   9,376.71x = 69,857,943.55
5. Step 5: Solve for x
   x = 69,857,943.55/9,376.71
6. Step 6: Final answer
   x = 7,450.16