Finding the Fourth Proportional to 18,816,789.30, 25,918,786.50 and 13,300,680.83

Step by Step Solution

1. Step 1: Write the proportion equation
   18,816,789.30 : 25,918,786.50 = 13,300,680.83 : x
2. Step 2: Convert to fraction form
   18,816,789.30/25,918,786.50 = 13,300,680.83/x
3. Step 3: Cross multiply
   18,816,789.30x = 25,918,786.50 × 13,300,680.83
4. Step 4: Simplify right side
   18,816,789.30x = 344,737,506,557,941.31
5. Step 5: Solve for x
   x = 344,737,506,557,941.31/18,816,789.30
6. Step 6: Final answer
   x = 18,320,740.12