Finding the Fourth Proportional to 21,142,041.12, 29,175,527.16 and 12,320,930.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,142,041.12 : 29,175,527.16 = 12,320,930.52 : x
2. Step 2: Convert to fraction form
   21,142,041.12/29,175,527.16 = 12,320,930.52/x
3. Step 3: Cross multiply
   21,142,041.12x = 29,175,527.16 × 12,320,930.52
4. Step 4: Simplify right side
   21,142,041.12x = 359,469,643,022,732.94
5. Step 5: Solve for x
   x = 359,469,643,022,732.94/21,142,041.12
6. Step 6: Final answer
   x = 17,002,598.80