Finding the Fourth Proportional to 22,078.47, 30,474.86 and 12,653.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,078.47 : 30,474.86 = 12,653.31 : x
2. Step 2: Convert to fraction form
   22,078.47/30,474.86 = 12,653.31/x
3. Step 3: Cross multiply
   22,078.47x = 30,474.86 × 12,653.31
4. Step 4: Simplify right side
   22,078.47x = 385,607,850.79
5. Step 5: Solve for x
   x = 385,607,850.79/22,078.47
6. Step 6: Final answer
   x = 17,465.33