Finding the Fourth Proportional to 8,870.00, 13,288.39 and 7,957.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.00 : 13,288.39 = 7,957.13 : x
2. Step 2: Convert to fraction form
   8,870.00/13,288.39 = 7,957.13/x
3. Step 3: Cross multiply
   8,870.00x = 13,288.39 × 7,957.13
4. Step 4: Simplify right side
   8,870.00x = 105,737,360.39
5. Step 5: Solve for x
   x = 105,737,360.39/8,870.00
6. Step 6: Final answer
   x = 11,920.79