Finding the Fourth Proportional to 8,974.84, 12,385.86 and 5,438.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.84 : 12,385.86 = 5,438.38 : x
2. Step 2: Convert to fraction form
   8,974.84/12,385.86 = 5,438.38/x
3. Step 3: Cross multiply
   8,974.84x = 12,385.86 × 5,438.38
4. Step 4: Simplify right side
   8,974.84x = 67,359,013.31
5. Step 5: Solve for x
   x = 67,359,013.31/8,974.84
6. Step 6: Final answer
   x = 7,505.32