Finding the Fourth Proportional to 10,447.98, 15,654.32 and 5,175.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,447.98 : 15,654.32 = 5,175.96 : x
2. Step 2: Convert to fraction form
   10,447.98/15,654.32 = 5,175.96/x
3. Step 3: Cross multiply
   10,447.98x = 15,654.32 × 5,175.96
4. Step 4: Simplify right side
   10,447.98x = 81,026,108.27
5. Step 5: Solve for x
   x = 81,026,108.27/10,447.98
6. Step 6: Final answer
   x = 7,755.19