Finding the Fourth Proportional to 9,261.72, 12,781.20 and 5,069.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.72 : 12,781.20 = 5,069.88 : x
2. Step 2: Convert to fraction form
   9,261.72/12,781.20 = 5,069.88/x
3. Step 3: Cross multiply
   9,261.72x = 12,781.20 × 5,069.88
4. Step 4: Simplify right side
   9,261.72x = 64,799,150.26
5. Step 5: Solve for x
   x = 64,799,150.26/9,261.72
6. Step 6: Final answer
   x = 6,996.45