Finding the Fourth Proportional to 8,301.83, 12,455.78 and 3,915.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,301.83 : 12,455.78 = 3,915.98 : x
2. Step 2: Convert to fraction form
   8,301.83/12,455.78 = 3,915.98/x
3. Step 3: Cross multiply
   8,301.83x = 12,455.78 × 3,915.98
4. Step 4: Simplify right side
   8,301.83x = 48,776,550.21
5. Step 5: Solve for x
   x = 48,776,550.21/8,301.83
6. Step 6: Final answer
   x = 5,875.40