Finding the Fourth Proportional to 8,354.64, 12,521.01 and 3,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,354.64 : 12,521.01 = 3,418.50 : x
2. Step 2: Convert to fraction form
   8,354.64/12,521.01 = 3,418.50/x
3. Step 3: Cross multiply
   8,354.64x = 12,521.01 × 3,418.50
4. Step 4: Simplify right side
   8,354.64x = 42,803,072.69
5. Step 5: Solve for x
   x = 42,803,072.69/8,354.64
6. Step 6: Final answer
   x = 5,123.27