Finding the Fourth Proportional to 8,312.34, 12,473.37 and 3,380.97

Step by Step Solution

1. Step 1: Write the proportion equation
   8,312.34 : 12,473.37 = 3,380.97 : x
2. Step 2: Convert to fraction form
   8,312.34/12,473.37 = 3,380.97/x
3. Step 3: Cross multiply
   8,312.34x = 12,473.37 × 3,380.97
4. Step 4: Simplify right side
   8,312.34x = 42,172,089.77
5. Step 5: Solve for x
   x = 42,172,089.77/8,312.34
6. Step 6: Final answer
   x = 5,073.43