Finding the Fourth Proportional to 17,728.38, 26,601.88 and 7,874.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,728.38 : 26,601.88 = 7,874.72 : x
2. Step 2: Convert to fraction form
   17,728.38/26,601.88 = 7,874.72/x
3. Step 3: Cross multiply
   17,728.38x = 26,601.88 × 7,874.72
4. Step 4: Simplify right side
   17,728.38x = 209,482,356.47
5. Step 5: Solve for x
   x = 209,482,356.47/17,728.38
6. Step 6: Final answer
   x = 11,816.22