Finding the Fourth Proportional to 7,061.32, 9,744.60 and 3,917.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,061.32 : 9,744.60 = 3,917.80 : x
2. Step 2: Convert to fraction form
   7,061.32/9,744.60 = 3,917.80/x
3. Step 3: Cross multiply
   7,061.32x = 9,744.60 × 3,917.80
4. Step 4: Simplify right side
   7,061.32x = 38,177,393.88
5. Step 5: Solve for x
   x = 38,177,393.88/7,061.32
6. Step 6: Final answer
   x = 5,406.55