Finding the Fourth Proportional to 23,069.42, 31,835.80 and 12,459.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,069.42 : 31,835.80 = 12,459.05 : x
2. Step 2: Convert to fraction form
   23,069.42/31,835.80 = 12,459.05/x
3. Step 3: Cross multiply
   23,069.42x = 31,835.80 × 12,459.05
4. Step 4: Simplify right side
   23,069.42x = 396,643,823.99
5. Step 5: Solve for x
   x = 396,643,823.99/23,069.42
6. Step 6: Final answer
   x = 17,193.49