Finding the Fourth Proportional to 11,060.50, 16,590.72 and 9,108.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,060.50 : 16,590.72 = 9,108.59 : x
2. Step 2: Convert to fraction form
   11,060.50/16,590.72 = 9,108.59/x
3. Step 3: Cross multiply
   11,060.50x = 16,590.72 × 9,108.59
4. Step 4: Simplify right side
   11,060.50x = 151,118,066.28
5. Step 5: Solve for x
   x = 151,118,066.28/11,060.50
6. Step 6: Final answer
   x = 13,662.86