Finding the Fourth Proportional to 9,899.84, 13,662.04 and 5,651.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,899.84 : 13,662.04 = 5,651.50 : x
2. Step 2: Convert to fraction form
   9,899.84/13,662.04 = 5,651.50/x
3. Step 3: Cross multiply
   9,899.84x = 13,662.04 × 5,651.50
4. Step 4: Simplify right side
   9,899.84x = 77,211,019.06
5. Step 5: Solve for x
   x = 77,211,019.06/9,899.84
6. Step 6: Final answer
   x = 7,799.22