Finding the Fourth Proportional to 8,868.57, 12,238.71 and 4,889.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.57 : 12,238.71 = 4,889.83 : x
2. Step 2: Convert to fraction form
   8,868.57/12,238.71 = 4,889.83/x
3. Step 3: Cross multiply
   8,868.57x = 12,238.71 × 4,889.83
4. Step 4: Simplify right side
   8,868.57x = 59,845,150.13
5. Step 5: Solve for x
   x = 59,845,150.13/8,868.57
6. Step 6: Final answer
   x = 6,748.00