Finding the Fourth Proportional to 9,078.93, 12,528.81 and 5,100.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.93 : 12,528.81 = 5,100.12 : x
2. Step 2: Convert to fraction form
   9,078.93/12,528.81 = 5,100.12/x
3. Step 3: Cross multiply
   9,078.93x = 12,528.81 × 5,100.12
4. Step 4: Simplify right side
   9,078.93x = 63,898,434.46
5. Step 5: Solve for x
   x = 63,898,434.46/9,078.93
6. Step 6: Final answer
   x = 7,038.10