Finding the Fourth Proportional to 21,807,931.49, 30,095,150.94 and 12,018,728.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,807,931.49 : 30,095,150.94 = 12,018,728.13 : x
2. Step 2: Convert to fraction form
   21,807,931.49/30,095,150.94 = 12,018,728.13/x
3. Step 3: Cross multiply
   21,807,931.49x = 30,095,150.94 × 12,018,728.13
4. Step 4: Simplify right side
   21,807,931.49x = 361,705,437,066,317.19
5. Step 5: Solve for x
   x = 361,705,437,066,317.19/21,807,931.49
6. Step 6: Final answer
   x = 16,585,958.06