Finding the Fourth Proportional to 12,079,887.50, 18,122,669.15 and 3,992,863.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079,887.50 : 18,122,669.15 = 3,992,863.61 : x
2. Step 2: Convert to fraction form
   12,079,887.50/18,122,669.15 = 3,992,863.61/x
3. Step 3: Cross multiply
   12,079,887.50x = 18,122,669.15 × 3,992,863.61
4. Step 4: Simplify right side
   12,079,887.50x = 72,361,346,054,526.97
5. Step 5: Solve for x
   x = 72,361,346,054,526.97/12,079,887.50
6. Step 6: Final answer
   x = 5,990,233.44