Finding the Fourth Proportional to 9,820.97, 13,552.62 and 5,572.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,820.97 : 13,552.62 = 5,572.43 : x
2. Step 2: Convert to fraction form
   9,820.97/13,552.62 = 5,572.43/x
3. Step 3: Cross multiply
   9,820.97x = 13,552.62 × 5,572.43
4. Step 4: Simplify right side
   9,820.97x = 75,521,026.27
5. Step 5: Solve for x
   x = 75,521,026.27/9,820.97
6. Step 6: Final answer
   x = 7,689.77