Finding the Fourth Proportional to 8,454.55, 12,657.53 and 5,174.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,454.55 : 12,657.53 = 5,174.05 : x
2. Step 2: Convert to fraction form
   8,454.55/12,657.53 = 5,174.05/x
3. Step 3: Cross multiply
   8,454.55x = 12,657.53 × 5,174.05
4. Step 4: Simplify right side
   8,454.55x = 65,490,667.23
5. Step 5: Solve for x
   x = 65,490,667.23/8,454.55
6. Step 6: Final answer
   x = 7,746.20