Finding the Fourth Proportional to 12,342,321.42, 18,438,426.71 and 7,988,908.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342,321.42 : 18,438,426.71 = 7,988,908.38 : x
2. Step 2: Convert to fraction form
   12,342,321.42/18,438,426.71 = 7,988,908.38/x
3. Step 3: Cross multiply
   12,342,321.42x = 18,438,426.71 × 7,988,908.38
4. Step 4: Simplify right side
   12,342,321.42x = 147,302,901,617,590.28
5. Step 5: Solve for x
   x = 147,302,901,617,590.28/12,342,321.42
6. Step 6: Final answer
   x = 11,934,780.87