Finding the Fourth Proportional to 9,078.83, 12,528.16 and 5,100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.83 : 12,528.16 = 5,100.31 : x
2. Step 2: Convert to fraction form
   9,078.83/12,528.16 = 5,100.31/x
3. Step 3: Cross multiply
   9,078.83x = 12,528.16 × 5,100.31
4. Step 4: Simplify right side
   9,078.83x = 63,897,499.73
5. Step 5: Solve for x
   x = 63,897,499.73/9,078.83
6. Step 6: Final answer
   x = 7,038.08