Finding the Fourth Proportional to 31,317.56, 43,216.60 and 17,886.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,317.56 : 43,216.60 = 17,886.18 : x
2. Step 2: Convert to fraction form
   31,317.56/43,216.60 = 17,886.18/x
3. Step 3: Cross multiply
   31,317.56x = 43,216.60 × 17,886.18
4. Step 4: Simplify right side
   31,317.56x = 772,979,886.59
5. Step 5: Solve for x
   x = 772,979,886.59/31,317.56
6. Step 6: Final answer
   x = 24,682.00