Finding the Fourth Proportional to 8,719.96, 12,030.60 and 4,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,719.96 : 12,030.60 = 4,942.72 : x
2. Step 2: Convert to fraction form
   8,719.96/12,030.60 = 4,942.72/x
3. Step 3: Cross multiply
   8,719.96x = 12,030.60 × 4,942.72
4. Step 4: Simplify right side
   8,719.96x = 59,463,887.23
5. Step 5: Solve for x
   x = 59,463,887.23/8,719.96
6. Step 6: Final answer
   x = 6,819.28