Finding the Fourth Proportional to 13,111,079.78, 18,086,859.15 and 8,761,233.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111,079.78 : 18,086,859.15 = 8,761,233.98 : x
2. Step 2: Convert to fraction form
   13,111,079.78/18,086,859.15 = 8,761,233.98/x
3. Step 3: Cross multiply
   13,111,079.78x = 18,086,859.15 × 8,761,233.98
4. Step 4: Simplify right side
   13,111,079.78x = 158,463,204,976,453.91
5. Step 5: Solve for x
   x = 158,463,204,976,453.91/13,111,079.78
6. Step 6: Final answer
   x = 12,086,205.53