Finding the Fourth Proportional to 11,008.59, 15,191.42 and 5,972.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,008.59 : 15,191.42 = 5,972.64 : x
2. Step 2: Convert to fraction form
   11,008.59/15,191.42 = 5,972.64/x
3. Step 3: Cross multiply
   11,008.59x = 15,191.42 × 5,972.64
4. Step 4: Simplify right side
   11,008.59x = 90,732,806.79
5. Step 5: Solve for x
   x = 90,732,806.79/11,008.59
6. Step 6: Final answer
   x = 8,242.00