Finding the Fourth Proportional to 12,377.83, 17,089.17 and 8,599.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377.83 : 17,089.17 = 8,599.78 : x
2. Step 2: Convert to fraction form
   12,377.83/17,089.17 = 8,599.78/x
3. Step 3: Cross multiply
   12,377.83x = 17,089.17 × 8,599.78
4. Step 4: Simplify right side
   12,377.83x = 146,963,102.38
5. Step 5: Solve for x
   x = 146,963,102.38/12,377.83
6. Step 6: Final answer
   x = 11,873.09