Finding the Fourth Proportional to 23,156.15, 31,956.74 and 13,085.02

Step by Step Solution

1. Step 1: Write the proportion equation
   23,156.15 : 31,956.74 = 13,085.02 : x
2. Step 2: Convert to fraction form
   23,156.15/31,956.74 = 13,085.02/x
3. Step 3: Cross multiply
   23,156.15x = 31,956.74 × 13,085.02
4. Step 4: Simplify right side
   23,156.15x = 418,154,582.03
5. Step 5: Solve for x
   x = 418,154,582.03/23,156.15
6. Step 6: Final answer
   x = 18,058.04