Finding the Fourth Proportional to 8,312.73, 12,473.15 and 3,385.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,312.73 : 12,473.15 = 3,385.77 : x
2. Step 2: Convert to fraction form
   8,312.73/12,473.15 = 3,385.77/x
3. Step 3: Cross multiply
   8,312.73x = 12,473.15 × 3,385.77
4. Step 4: Simplify right side
   8,312.73x = 42,231,200.15
5. Step 5: Solve for x
   x = 42,231,200.15/8,312.73
6. Step 6: Final answer
   x = 5,080.30