Finding the Fourth Proportional to 12,812,940.80, 19,222,234.49 and 3,715,418.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,812,940.80 : 19,222,234.49 = 3,715,418.21 : x
2. Step 2: Convert to fraction form
   12,812,940.80/19,222,234.49 = 3,715,418.21/x
3. Step 3: Cross multiply
   12,812,940.80x = 19,222,234.49 × 3,715,418.21
4. Step 4: Simplify right side
   12,812,940.80x = 71,418,640,061,036.06
5. Step 5: Solve for x
   x = 71,418,640,061,036.06/12,812,940.80
6. Step 6: Final answer
   x = 5,573,946.00