Finding the Fourth Proportional to 9,284.32, 13,930.12 and 4,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,284.32 : 13,930.12 = 4,086.55 : x
2. Step 2: Convert to fraction form
   9,284.32/13,930.12 = 4,086.55/x
3. Step 3: Cross multiply
   9,284.32x = 13,930.12 × 4,086.55
4. Step 4: Simplify right side
   9,284.32x = 56,926,131.89
5. Step 5: Solve for x
   x = 56,926,131.89/9,284.32
6. Step 6: Final answer
   x = 6,131.43