Finding the Fourth Proportional to 9,521.91, 13,142.34 and 5,543.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.91 : 13,142.34 = 5,543.82 : x
2. Step 2: Convert to fraction form
   9,521.91/13,142.34 = 5,543.82/x
3. Step 3: Cross multiply
   9,521.91x = 13,142.34 × 5,543.82
4. Step 4: Simplify right side
   9,521.91x = 72,858,767.34
5. Step 5: Solve for x
   x = 72,858,767.34/9,521.91
6. Step 6: Final answer
   x = 7,651.70