Finding the Fourth Proportional to 7,775.51, 10,730.18 and 4,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,775.51 : 10,730.18 = 4,238.72 : x
2. Step 2: Convert to fraction form
   7,775.51/10,730.18 = 4,238.72/x
3. Step 3: Cross multiply
   7,775.51x = 10,730.18 × 4,238.72
4. Step 4: Simplify right side
   7,775.51x = 45,482,153.73
5. Step 5: Solve for x
   x = 45,482,153.73/7,775.51
6. Step 6: Final answer
   x = 5,849.41