Finding the Fourth Proportional to 11,179.89, 15,430.10 and 8,522.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,179.89 : 15,430.10 = 8,522.28 : x
2. Step 2: Convert to fraction form
   11,179.89/15,430.10 = 8,522.28/x
3. Step 3: Cross multiply
   11,179.89x = 15,430.10 × 8,522.28
4. Step 4: Simplify right side
   11,179.89x = 131,499,590.02
5. Step 5: Solve for x
   x = 131,499,590.02/11,179.89
6. Step 6: Final answer
   x = 11,762.15