Finding the Fourth Proportional to 9,909.90, 13,673.91 and 5,659.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909.90 : 13,673.91 = 5,659.02 : x
2. Step 2: Convert to fraction form
   9,909.90/13,673.91 = 5,659.02/x
3. Step 3: Cross multiply
   9,909.90x = 13,673.91 × 5,659.02
4. Step 4: Simplify right side
   9,909.90x = 77,380,930.17
5. Step 5: Solve for x
   x = 77,380,930.17/9,909.90
6. Step 6: Final answer
   x = 7,808.45