Finding the Fourth Proportional to 8,312.16, 12,472.83 and 3,385.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,312.16 : 12,472.83 = 3,385.27 : x
2. Step 2: Convert to fraction form
   8,312.16/12,472.83 = 3,385.27/x
3. Step 3: Cross multiply
   8,312.16x = 12,472.83 × 3,385.27
4. Step 4: Simplify right side
   8,312.16x = 42,223,866.03
5. Step 5: Solve for x
   x = 42,223,866.03/8,312.16
6. Step 6: Final answer
   x = 5,079.77