Finding the Fourth Proportional to 11,398.06, 17,103.01 and 8,623.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,398.06 : 17,103.01 = 8,623.91 : x
2. Step 2: Convert to fraction form
   11,398.06/17,103.01 = 8,623.91/x
3. Step 3: Cross multiply
   11,398.06x = 17,103.01 × 8,623.91
4. Step 4: Simplify right side
   11,398.06x = 147,494,711.89
5. Step 5: Solve for x
   x = 147,494,711.89/11,398.06
6. Step 6: Final answer
   x = 12,940.34