Finding the Fourth Proportional to 12,573.72, 18,863.02 and 4,781.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,573.72 : 18,863.02 = 4,781.94 : x
2. Step 2: Convert to fraction form
   12,573.72/18,863.02 = 4,781.94/x
3. Step 3: Cross multiply
   12,573.72x = 18,863.02 × 4,781.94
4. Step 4: Simplify right side
   12,573.72x = 90,201,829.86
5. Step 5: Solve for x
   x = 90,201,829.86/12,573.72
6. Step 6: Final answer
   x = 7,173.84