Finding the Fourth Proportional to 31,997.12, 47,995.48 and 17,213

Step by Step Solution

1. Step 1: Write the proportion equation
   31,997.12 : 47,995.48 = 17,213 : x
2. Step 2: Convert to fraction form
   31,997.12/47,995.48 = 17,213/x
3. Step 3: Cross multiply
   31,997.12x = 47,995.48 × 17,213
4. Step 4: Simplify right side
   31,997.12x = 826,146,111.18
5. Step 5: Solve for x
   x = 826,146,111.18/31,997.12
6. Step 6: Final answer
   x = 25,819.39