Finding the Fourth Proportional to 8,796.52, 12,139.14 and 5,259.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.52 : 12,139.14 = 5,259.88 : x
2. Step 2: Convert to fraction form
   8,796.52/12,139.14 = 5,259.88/x
3. Step 3: Cross multiply
   8,796.52x = 12,139.14 × 5,259.88
4. Step 4: Simplify right side
   8,796.52x = 63,850,419.70
5. Step 5: Solve for x
   x = 63,850,419.70/8,796.52
6. Step 6: Final answer
   x = 7,258.60