Finding the Fourth Proportional to 9,402.88, 14,108.88 and 5,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,402.88 : 14,108.88 = 5,242.72 : x
2. Step 2: Convert to fraction form
   9,402.88/14,108.88 = 5,242.72/x
3. Step 3: Cross multiply
   9,402.88x = 14,108.88 × 5,242.72
4. Step 4: Simplify right side
   9,402.88x = 73,968,907.35
5. Step 5: Solve for x
   x = 73,968,907.35/9,402.88
6. Step 6: Final answer
   x = 7,866.62