Finding the Fourth Proportional to 11,857,608.10, 17,786,412.15 and 8,078,472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,857,608.10 : 17,786,412.15 = 8,078,472.10 : x
2. Step 2: Convert to fraction form
   11,857,608.10/17,786,412.15 = 8,078,472.10/x
3. Step 3: Cross multiply
   11,857,608.10x = 17,786,412.15 × 8,078,472.10
4. Step 4: Simplify right side
   11,857,608.10x = 143,687,034,312,876
5. Step 5: Solve for x
   x = 143,687,034,312,876/11,857,608.10
6. Step 6: Final answer
   x = 12,117,708.15