Finding the Fourth Proportional to 21,933,520.71, 30,269,204.28 and 12,143,964.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,933,520.71 : 30,269,204.28 = 12,143,964.59 : x
2. Step 2: Convert to fraction form
   21,933,520.71/30,269,204.28 = 12,143,964.59/x
3. Step 3: Cross multiply
   21,933,520.71x = 30,269,204.28 × 12,143,964.59
4. Step 4: Simplify right side
   21,933,520.71x = 367,588,144,905,959.94
5. Step 5: Solve for x
   x = 367,588,144,905,959.94/21,933,520.71
6. Step 6: Final answer
   x = 16,759,194.74