Finding the Fourth Proportional to 6,331.88, 8,742.12 and 5,667.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,331.88 : 8,742.12 = 5,667.60 : x
2. Step 2: Convert to fraction form
   6,331.88/8,742.12 = 5,667.60/x
3. Step 3: Cross multiply
   6,331.88x = 8,742.12 × 5,667.60
4. Step 4: Simplify right side
   6,331.88x = 49,546,839.31
5. Step 5: Solve for x
   x = 49,546,839.31/6,331.88
6. Step 6: Final answer
   x = 7,824.98