Finding the Fourth Proportional to 12,391,870.23, 18,595,086.80 and 5,202,851.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391,870.23 : 18,595,086.80 = 5,202,851.31 : x
2. Step 2: Convert to fraction form
   12,391,870.23/18,595,086.80 = 5,202,851.31/x
3. Step 3: Cross multiply
   12,391,870.23x = 18,595,086.80 × 5,202,851.31
4. Step 4: Simplify right side
   12,391,870.23x = 96,747,471,690,929.45
5. Step 5: Solve for x
   x = 96,747,471,690,929.45/12,391,870.23
6. Step 6: Final answer
   x = 7,807,334.15