Finding the Fourth Proportional to 9,881.07, 13,636.29 and 5,689.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,881.07 : 13,636.29 = 5,689.32 : x
2. Step 2: Convert to fraction form
   9,881.07/13,636.29 = 5,689.32/x
3. Step 3: Cross multiply
   9,881.07x = 13,636.29 × 5,689.32
4. Step 4: Simplify right side
   9,881.07x = 77,581,217.42
5. Step 5: Solve for x
   x = 77,581,217.42/9,881.07
6. Step 6: Final answer
   x = 7,851.50