Finding the Fourth Proportional to 23,056.05, 31,819.05 and 12,985.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,056.05 : 31,819.05 = 12,985.59 : x
2. Step 2: Convert to fraction form
   23,056.05/31,819.05 = 12,985.59/x
3. Step 3: Cross multiply
   23,056.05x = 31,819.05 × 12,985.59
4. Step 4: Simplify right side
   23,056.05x = 413,189,137.49
5. Step 5: Solve for x
   x = 413,189,137.49/23,056.05
6. Step 6: Final answer
   x = 17,921.07