Finding the Fourth Proportional to 7,638.83, 10,541.72 and 4,282.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,638.83 : 10,541.72 = 4,282.40 : x
2. Step 2: Convert to fraction form
   7,638.83/10,541.72 = 4,282.40/x
3. Step 3: Cross multiply
   7,638.83x = 10,541.72 × 4,282.40
4. Step 4: Simplify right side
   7,638.83x = 45,143,787.61
5. Step 5: Solve for x
   x = 45,143,787.61/7,638.83
6. Step 6: Final answer
   x = 5,909.78