Finding the Fourth Proportional to 9,672.22, 13,343.16 and 5,690.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.22 : 13,343.16 = 5,690.80 : x
2. Step 2: Convert to fraction form
   9,672.22/13,343.16 = 5,690.80/x
3. Step 3: Cross multiply
   9,672.22x = 13,343.16 × 5,690.80
4. Step 4: Simplify right side
   9,672.22x = 75,933,254.93
5. Step 5: Solve for x
   x = 75,933,254.93/9,672.22
6. Step 6: Final answer
   x = 7,850.65