Finding the Fourth Proportional to 7,740.59, 10,685.73 and 5,507.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,740.59 : 10,685.73 = 5,507.15 : x
2. Step 2: Convert to fraction form
   7,740.59/10,685.73 = 5,507.15/x
3. Step 3: Cross multiply
   7,740.59x = 10,685.73 × 5,507.15
4. Step 4: Simplify right side
   7,740.59x = 58,847,864.54
5. Step 5: Solve for x
   x = 58,847,864.54/7,740.59
6. Step 6: Final answer
   x = 7,602.51