Finding the Fourth Proportional to 9,523.31, 13,141.01 and 5,543.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,523.31 : 13,141.01 = 5,543.78 : x
2. Step 2: Convert to fraction form
   9,523.31/13,141.01 = 5,543.78/x
3. Step 3: Cross multiply
   9,523.31x = 13,141.01 × 5,543.78
4. Step 4: Simplify right side
   9,523.31x = 72,850,816.57
5. Step 5: Solve for x
   x = 72,850,816.57/9,523.31
6. Step 6: Final answer
   x = 7,649.74