Finding the Fourth Proportional to 12,215,357.91, 18,323,026.43 and 3,117,454.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215,357.91 : 18,323,026.43 = 3,117,454.79 : x
2. Step 2: Convert to fraction form
   12,215,357.91/18,323,026.43 = 3,117,454.79/x
3. Step 3: Cross multiply
   12,215,357.91x = 18,323,026.43 × 3,117,454.79
4. Step 4: Simplify right side
   12,215,357.91x = 57,121,206,404,297.70
5. Step 5: Solve for x
   x = 57,121,206,404,297.70/12,215,357.91
6. Step 6: Final answer
   x = 4,676,179.51