Finding the Fourth Proportional to 9,062.64, 12,510.78 and 5,707.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,062.64 : 12,510.78 = 5,707.08 : x
2. Step 2: Convert to fraction form
   9,062.64/12,510.78 = 5,707.08/x
3. Step 3: Cross multiply
   9,062.64x = 12,510.78 × 5,707.08
4. Step 4: Simplify right side
   9,062.64x = 71,400,022.32
5. Step 5: Solve for x
   x = 71,400,022.32/9,062.64
6. Step 6: Final answer
   x = 7,878.50