Finding the Fourth Proportional to 20,747,882.12, 31,123,317.86 and 7,968,386.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,747,882.12 : 31,123,317.86 = 7,968,386.83 : x
2. Step 2: Convert to fraction form
   20,747,882.12/31,123,317.86 = 7,968,386.83/x
3. Step 3: Cross multiply
   20,747,882.12x = 31,123,317.86 × 7,968,386.83
4. Step 4: Simplify right side
   20,747,882.12x = 248,002,636,020,347.38
5. Step 5: Solve for x
   x = 248,002,636,020,347.38/20,747,882.12
6. Step 6: Final answer
   x = 11,953,154.28