Finding the Fourth Proportional to 7,714.72, 11,564.40 and 3,100.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,714.72 : 11,564.40 = 3,100.96 : x
2. Step 2: Convert to fraction form
   7,714.72/11,564.40 = 3,100.96/x
3. Step 3: Cross multiply
   7,714.72x = 11,564.40 × 3,100.96
4. Step 4: Simplify right side
   7,714.72x = 35,860,741.82
5. Step 5: Solve for x
   x = 35,860,741.82/7,714.72
6. Step 6: Final answer
   x = 4,648.35