Finding the Fourth Proportional to 40,482.18, 60,721.05 and 12,402.27

Step by Step Solution

1. Step 1: Write the proportion equation
   40,482.18 : 60,721.05 = 12,402.27 : x
2. Step 2: Convert to fraction form
   40,482.18/60,721.05 = 12,402.27/x
3. Step 3: Cross multiply
   40,482.18x = 60,721.05 × 12,402.27
4. Step 4: Simplify right side
   40,482.18x = 753,078,856.78
5. Step 5: Solve for x
   x = 753,078,856.78/40,482.18
6. Step 6: Final answer
   x = 18,602.72