Finding the Fourth Proportional to 23,182.56, 31,991.90 and 12,572.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,182.56 : 31,991.90 = 12,572.18 : x
2. Step 2: Convert to fraction form
   23,182.56/31,991.90 = 12,572.18/x
3. Step 3: Cross multiply
   23,182.56x = 31,991.90 × 12,572.18
4. Step 4: Simplify right side
   23,182.56x = 402,207,925.34
5. Step 5: Solve for x
   x = 402,207,925.34/23,182.56
6. Step 6: Final answer
   x = 17,349.59