Finding the Fourth Proportional to 23,069.15, 31,835.42 and 12,458.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,069.15 : 31,835.42 = 12,458.78 : x
2. Step 2: Convert to fraction form
   23,069.15/31,835.42 = 12,458.78/x
3. Step 3: Cross multiply
   23,069.15x = 31,835.42 × 12,458.78
4. Step 4: Simplify right side
   23,069.15x = 396,630,493.99
5. Step 5: Solve for x
   x = 396,630,493.99/23,069.15
6. Step 6: Final answer
   x = 17,193.12