Finding the Fourth Proportional to 31,499.96, 47,260.86 and 13,982.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,499.96 : 47,260.86 = 13,982.06 : x
2. Step 2: Convert to fraction form
   31,499.96/47,260.86 = 13,982.06/x
3. Step 3: Cross multiply
   31,499.96x = 47,260.86 × 13,982.06
4. Step 4: Simplify right side
   31,499.96x = 660,804,180.17
5. Step 5: Solve for x
   x = 660,804,180.17/31,499.96
6. Step 6: Final answer
   x = 20,977.94