Finding the Fourth Proportional to 10,894.48, 15,038.88 and 8,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,894.48 : 15,038.88 = 8,242.72 : x
2. Step 2: Convert to fraction form
   10,894.48/15,038.88 = 8,242.72/x
3. Step 3: Cross multiply
   10,894.48x = 15,038.88 × 8,242.72
4. Step 4: Simplify right side
   10,894.48x = 123,961,276.95
5. Step 5: Solve for x
   x = 123,961,276.95/10,894.48
6. Step 6: Final answer
   x = 11,378.36