Finding the Fourth Proportional to 9,778.32, 14,670.24 and 3,939.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778.32 : 14,670.24 = 3,939.03 : x
2. Step 2: Convert to fraction form
   9,778.32/14,670.24 = 3,939.03/x
3. Step 3: Cross multiply
   9,778.32x = 14,670.24 × 3,939.03
4. Step 4: Simplify right side
   9,778.32x = 57,786,515.47
5. Step 5: Solve for x
   x = 57,786,515.47/9,778.32
6. Step 6: Final answer
   x = 5,909.66