Finding the Fourth Proportional to 8,868.78, 12,242.88 and 5,726.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.78 : 12,242.88 = 5,726.52 : x
2. Step 2: Convert to fraction form
   8,868.78/12,242.88 = 5,726.52/x
3. Step 3: Cross multiply
   8,868.78x = 12,242.88 × 5,726.52
4. Step 4: Simplify right side
   8,868.78x = 70,109,097.18
5. Step 5: Solve for x
   x = 70,109,097.18/8,868.78
6. Step 6: Final answer
   x = 7,905.16