Finding the Fourth Proportional to 23,062.61, 31,824.05 and 12,989.45

Step by Step Solution

1. Step 1: Write the proportion equation
   23,062.61 : 31,824.05 = 12,989.45 : x
2. Step 2: Convert to fraction form
   23,062.61/31,824.05 = 12,989.45/x
3. Step 3: Cross multiply
   23,062.61x = 31,824.05 × 12,989.45
4. Step 4: Simplify right side
   23,062.61x = 413,376,920.89
5. Step 5: Solve for x
   x = 413,376,920.89/23,062.61
6. Step 6: Final answer
   x = 17,924.12