Finding the Fourth Proportional to 7,061.31, 9,744.12 and 3,917.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,061.31 : 9,744.12 = 3,917.25 : x
2. Step 2: Convert to fraction form
   7,061.31/9,744.12 = 3,917.25/x
3. Step 3: Cross multiply
   7,061.31x = 9,744.12 × 3,917.25
4. Step 4: Simplify right side
   7,061.31x = 38,170,154.07
5. Step 5: Solve for x
   x = 38,170,154.07/7,061.31
6. Step 6: Final answer
   x = 5,405.53