Finding the Fourth Proportional to 21,792,831.86, 30,074,311.36 and 12,003,311.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,792,831.86 : 30,074,311.36 = 12,003,311.99 : x
2. Step 2: Convert to fraction form
   21,792,831.86/30,074,311.36 = 12,003,311.99/x
3. Step 3: Cross multiply
   21,792,831.86x = 30,074,311.36 × 12,003,311.99
4. Step 4: Simplify right side
   21,792,831.86x = 360,991,342,228,671.12
5. Step 5: Solve for x
   x = 360,991,342,228,671.12/21,792,831.86
6. Step 6: Final answer
   x = 16,564,682.58