Finding the Fourth Proportional to 12,215,346.75, 18,323,009.70 and 3,117,443.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215,346.75 : 18,323,009.70 = 3,117,443.61 : x
2. Step 2: Convert to fraction form
   12,215,346.75/18,323,009.70 = 3,117,443.61/x
3. Step 3: Cross multiply
   12,215,346.75x = 18,323,009.70 × 3,117,443.61
4. Step 4: Simplify right side
   12,215,346.75x = 57,120,949,505,233.02
5. Step 5: Solve for x
   x = 57,120,949,505,233.02/12,215,346.75
6. Step 6: Final answer
   x = 4,676,162.75