Finding the Fourth Proportional to 9,888.88, 13,651.59 and 5,696.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,888.88 : 13,651.59 = 5,696.32 : x
2. Step 2: Convert to fraction form
   9,888.88/13,651.59 = 5,696.32/x
3. Step 3: Cross multiply
   9,888.88x = 13,651.59 × 5,696.32
4. Step 4: Simplify right side
   9,888.88x = 77,763,825.15
5. Step 5: Solve for x
   x = 77,763,825.15/9,888.88
6. Step 6: Final answer
   x = 7,863.76