Finding the Fourth Proportional to 5,553.60, 7,664.40 and 3,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,553.60 : 7,664.40 = 3,196.56 : x
2. Step 2: Convert to fraction form
   5,553.60/7,664.40 = 3,196.56/x
3. Step 3: Cross multiply
   5,553.60x = 7,664.40 × 3,196.56
4. Step 4: Simplify right side
   5,553.60x = 24,499,714.46
5. Step 5: Solve for x
   x = 24,499,714.46/5,553.60
6. Step 6: Final answer
   x = 4,411.50