Finding the Fourth Proportional to 9,268.75, 12,790.88 and 5,077.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.75 : 12,790.88 = 5,077.15 : x
2. Step 2: Convert to fraction form
   9,268.75/12,790.88 = 5,077.15/x
3. Step 3: Cross multiply
   9,268.75x = 12,790.88 × 5,077.15
4. Step 4: Simplify right side
   9,268.75x = 64,941,216.39
5. Step 5: Solve for x
   x = 64,941,216.39/9,268.75
6. Step 6: Final answer
   x = 7,006.47