Finding the Fourth Proportional to 13,218,002.38, 18,240,990.27 and 7,338,034.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,218,002.38 : 18,240,990.27 = 7,338,034.18 : x
2. Step 2: Convert to fraction form
   13,218,002.38/18,240,990.27 = 7,338,034.18/x
3. Step 3: Cross multiply
   13,218,002.38x = 18,240,990.27 × 7,338,034.18
4. Step 4: Simplify right side
   13,218,002.38x = 133,853,010,041,617.25
5. Step 5: Solve for x
   x = 133,853,010,041,617.25/13,218,002.38
6. Step 6: Final answer
   x = 10,126,568.77