Finding the Fourth Proportional to 9,941.57, 13,719.31 and 5,404.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,941.57 : 13,719.31 = 5,404.29 : x
2. Step 2: Convert to fraction form
   9,941.57/13,719.31 = 5,404.29/x
3. Step 3: Cross multiply
   9,941.57x = 13,719.31 × 5,404.29
4. Step 4: Simplify right side
   9,941.57x = 74,143,061.24
5. Step 5: Solve for x
   x = 74,143,061.24/9,941.57
6. Step 6: Final answer
   x = 7,457.89