Finding the Fourth Proportional to 11,293.58, 15,580.21 and 7,938.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,293.58 : 15,580.21 = 7,938.56 : x
2. Step 2: Convert to fraction form
   11,293.58/15,580.21 = 7,938.56/x
3. Step 3: Cross multiply
   11,293.58x = 15,580.21 × 7,938.56
4. Step 4: Simplify right side
   11,293.58x = 123,684,431.90
5. Step 5: Solve for x
   x = 123,684,431.90/11,293.58
6. Step 6: Final answer
   x = 10,951.75