Finding the Fourth Proportional to 9,055.68, 12,498.24 and 5,078.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,055.68 : 12,498.24 = 5,078.40 : x
2. Step 2: Convert to fraction form
   9,055.68/12,498.24 = 5,078.40/x
3. Step 3: Cross multiply
   9,055.68x = 12,498.24 × 5,078.40
4. Step 4: Simplify right side
   9,055.68x = 63,471,062.02
5. Step 5: Solve for x
   x = 63,471,062.02/9,055.68
6. Step 6: Final answer
   x = 7,008.98