Finding the Fourth Proportional to 11,294.61, 15,591.99 and 7,940.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,294.61 : 15,591.99 = 7,940.30 : x
2. Step 2: Convert to fraction form
   11,294.61/15,591.99 = 7,940.30/x
3. Step 3: Cross multiply
   11,294.61x = 15,591.99 × 7,940.30
4. Step 4: Simplify right side
   11,294.61x = 123,805,161.57
5. Step 5: Solve for x
   x = 123,805,161.57/11,294.61
6. Step 6: Final answer
   x = 10,961.43