Finding the Fourth Proportional to 21,856,009.06, 30,161,337.42 and 12,066,472.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856,009.06 : 30,161,337.42 = 12,066,472.18 : x
2. Step 2: Convert to fraction form
   21,856,009.06/30,161,337.42 = 12,066,472.18/x
3. Step 3: Cross multiply
   21,856,009.06x = 30,161,337.42 × 12,066,472.18
4. Step 4: Simplify right side
   21,856,009.06x = 363,940,938,890,023
5. Step 5: Solve for x
   x = 363,940,938,890,023/21,856,009.06
6. Step 6: Final answer
   x = 16,651,756.41