Finding the Fourth Proportional to 3,714.66, 5,538.78 and 3,612.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,714.66 : 5,538.78 = 3,612.60 : x
2. Step 2: Convert to fraction form
   3,714.66/5,538.78 = 3,612.60/x
3. Step 3: Cross multiply
   3,714.66x = 5,538.78 × 3,612.60
4. Step 4: Simplify right side
   3,714.66x = 20,009,396.63
5. Step 5: Solve for x
   x = 20,009,396.63/3,714.66
6. Step 6: Final answer
   x = 5,386.60