Finding the Fourth Proportional to 12,574.96, 18,845.42 and 4,779.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,574.96 : 18,845.42 = 4,779.52 : x
2. Step 2: Convert to fraction form
   12,574.96/18,845.42 = 4,779.52/x
3. Step 3: Cross multiply
   12,574.96x = 18,845.42 × 4,779.52
4. Step 4: Simplify right side
   12,574.96x = 90,072,061.80
5. Step 5: Solve for x
   x = 90,072,061.80/12,574.96
6. Step 6: Final answer
   x = 7,162.81