Finding the Fourth Proportional to 31,555.72, 47,315.82 and 10,484.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,555.72 : 47,315.82 = 10,484.48 : x
2. Step 2: Convert to fraction form
   31,555.72/47,315.82 = 10,484.48/x
3. Step 3: Cross multiply
   31,555.72x = 47,315.82 × 10,484.48
4. Step 4: Simplify right side
   31,555.72x = 496,081,768.47
5. Step 5: Solve for x
   x = 496,081,768.47/31,555.72
6. Step 6: Final answer
   x = 15,720.82