Finding the Fourth Proportional to 23,065.02, 31,830.39 and 12,993.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,065.02 : 31,830.39 = 12,993.57 : x
2. Step 2: Convert to fraction form
   23,065.02/31,830.39 = 12,993.57/x
3. Step 3: Cross multiply
   23,065.02x = 31,830.39 × 12,993.57
4. Step 4: Simplify right side
   23,065.02x = 413,590,400.59
5. Step 5: Solve for x
   x = 413,590,400.59/23,065.02
6. Step 6: Final answer
   x = 17,931.50