Finding the Fourth Proportional to 12,955.76, 19,442.16 and 5,561.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955.76 : 19,442.16 = 5,561.72 : x
2. Step 2: Convert to fraction form
   12,955.76/19,442.16 = 5,561.72/x
3. Step 3: Cross multiply
   12,955.76x = 19,442.16 × 5,561.72
4. Step 4: Simplify right side
   12,955.76x = 108,131,850.12
5. Step 5: Solve for x
   x = 108,131,850.12/12,955.76
6. Step 6: Final answer
   x = 8,346.24