Finding the Fourth Proportional to 31,530.84, 43,514.52 and 17,385

Step by Step Solution

1. Step 1: Write the proportion equation
   31,530.84 : 43,514.52 = 17,385 : x
2. Step 2: Convert to fraction form
   31,530.84/43,514.52 = 17,385/x
3. Step 3: Cross multiply
   31,530.84x = 43,514.52 × 17,385
4. Step 4: Simplify right side
   31,530.84x = 756,499,930.20
5. Step 5: Solve for x
   x = 756,499,930.20/31,530.84
6. Step 6: Final answer
   x = 23,992.38