Finding the Fourth Proportional to 17,686.86, 26,521.16 and 5,205.27

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.86 : 26,521.16 = 5,205.27 : x
2. Step 2: Convert to fraction form
   17,686.86/26,521.16 = 5,205.27/x
3. Step 3: Cross multiply
   17,686.86x = 26,521.16 × 5,205.27
4. Step 4: Simplify right side
   17,686.86x = 138,049,665.91
5. Step 5: Solve for x
   x = 138,049,665.91/17,686.86
6. Step 6: Final answer
   x = 7,805.21