Finding the Fourth Proportional to 7,409.60, 11,105.60 and 3,710.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,409.60 : 11,105.60 = 3,710.72 : x
2. Step 2: Convert to fraction form
   7,409.60/11,105.60 = 3,710.72/x
3. Step 3: Cross multiply
   7,409.60x = 11,105.60 × 3,710.72
4. Step 4: Simplify right side
   7,409.60x = 41,209,772.03
5. Step 5: Solve for x
   x = 41,209,772.03/7,409.60
6. Step 6: Final answer
   x = 5,561.67