Finding the Fourth Proportional to 31,316.05, 43,216.50 and 17,889.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,316.05 : 43,216.50 = 17,889.10 : x
2. Step 2: Convert to fraction form
   31,316.05/43,216.50 = 17,889.10/x
3. Step 3: Cross multiply
   31,316.05x = 43,216.50 × 17,889.10
4. Step 4: Simplify right side
   31,316.05x = 773,104,290.15
5. Step 5: Solve for x
   x = 773,104,290.15/31,316.05
6. Step 6: Final answer
   x = 24,687.16