Finding the Fourth Proportional to 12,436.32, 18,656.51 and 3,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.32 : 18,656.51 = 3,672.12 : x
2. Step 2: Convert to fraction form
   12,436.32/18,656.51 = 3,672.12/x
3. Step 3: Cross multiply
   12,436.32x = 18,656.51 × 3,672.12
4. Step 4: Simplify right side
   12,436.32x = 68,508,943.50
5. Step 5: Solve for x
   x = 68,508,943.50/12,436.32
6. Step 6: Final answer
   x = 5,508.78