Finding the Fourth Proportional to 31,185, 43,036.21 and 17,038.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,185 : 43,036.21 = 17,038.76 : x
2. Step 2: Convert to fraction form
   31,185/43,036.21 = 17,038.76/x
3. Step 3: Cross multiply
   31,185x = 43,036.21 × 17,038.76
4. Step 4: Simplify right side
   31,185x = 733,283,459.62
5. Step 5: Solve for x
   x = 733,283,459.62/31,185
6. Step 6: Final answer
   x = 23,513.98