Finding the Fourth Proportional to 8,820.16, 13,225.90 and 4,372.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820.16 : 13,225.90 = 4,372.72 : x
2. Step 2: Convert to fraction form
   8,820.16/13,225.90 = 4,372.72/x
3. Step 3: Cross multiply
   8,820.16x = 13,225.90 × 4,372.72
4. Step 4: Simplify right side
   8,820.16x = 57,833,157.45
5. Step 5: Solve for x
   x = 57,833,157.45/8,820.16
6. Step 6: Final answer
   x = 6,556.93