Finding the Fourth Proportional to 12,407.31, 18,612.18 and 3,643.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407.31 : 18,612.18 = 3,643.52 : x
2. Step 2: Convert to fraction form
   12,407.31/18,612.18 = 3,643.52/x
3. Step 3: Cross multiply
   12,407.31x = 18,612.18 × 3,643.52
4. Step 4: Simplify right side
   12,407.31x = 67,813,757.01
5. Step 5: Solve for x
   x = 67,813,757.01/12,407.31
6. Step 6: Final answer
   x = 5,465.63