Finding the Fourth Proportional to 5,152.56, 7,730.15 and 2,811.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,152.56 : 7,730.15 = 2,811.93 : x
2. Step 2: Convert to fraction form
   5,152.56/7,730.15 = 2,811.93/x
3. Step 3: Cross multiply
   5,152.56x = 7,730.15 × 2,811.93
4. Step 4: Simplify right side
   5,152.56x = 21,736,626.63
5. Step 5: Solve for x
   x = 21,736,626.63/5,152.56
6. Step 6: Final answer
   x = 4,218.61