Finding the Fourth Proportional to 5,522.16, 7,620.72 and 3,164.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,522.16 : 7,620.72 = 3,164.64 : x
2. Step 2: Convert to fraction form
   5,522.16/7,620.72 = 3,164.64/x
3. Step 3: Cross multiply
   5,522.16x = 7,620.72 × 3,164.64
4. Step 4: Simplify right side
   5,522.16x = 24,116,835.34
5. Step 5: Solve for x
   x = 24,116,835.34/5,522.16
6. Step 6: Final answer
   x = 4,367.28