Finding the Fourth Proportional to 9,523.60, 13,139.38 and 5,543.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,523.60 : 13,139.38 = 5,543.87 : x
2. Step 2: Convert to fraction form
   9,523.60/13,139.38 = 5,543.87/x
3. Step 3: Cross multiply
   9,523.60x = 13,139.38 × 5,543.87
4. Step 4: Simplify right side
   9,523.60x = 72,843,014.60
5. Step 5: Solve for x
   x = 72,843,014.60/9,523.60
6. Step 6: Final answer
   x = 7,648.68