Finding the Fourth Proportional to 9,266.34, 12,787.77 and 5,287.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,266.34 : 12,787.77 = 5,287.82 : x
2. Step 2: Convert to fraction form
   9,266.34/12,787.77 = 5,287.82/x
3. Step 3: Cross multiply
   9,266.34x = 12,787.77 × 5,287.82
4. Step 4: Simplify right side
   9,266.34x = 67,619,409.17
5. Step 5: Solve for x
   x = 67,619,409.17/9,266.34
6. Step 6: Final answer
   x = 7,297.32