Finding the Fourth Proportional to 11,008.71, 15,191.90 and 5,972.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,008.71 : 15,191.90 = 5,972.91 : x
2. Step 2: Convert to fraction form
   11,008.71/15,191.90 = 5,972.91/x
3. Step 3: Cross multiply
   11,008.71x = 15,191.90 × 5,972.91
4. Step 4: Simplify right side
   11,008.71x = 90,739,821.56
5. Step 5: Solve for x
   x = 90,739,821.56/11,008.71
6. Step 6: Final answer
   x = 8,242.55