Finding the Fourth Proportional to 11,659.78, 16,089.06 and 8,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,659.78 : 16,089.06 = 8,510.50 : x
2. Step 2: Convert to fraction form
   11,659.78/16,089.06 = 8,510.50/x
3. Step 3: Cross multiply
   11,659.78x = 16,089.06 × 8,510.50
4. Step 4: Simplify right side
   11,659.78x = 136,925,945.13
5. Step 5: Solve for x
   x = 136,925,945.13/11,659.78
6. Step 6: Final answer
   x = 11,743.44