Finding the Fourth Proportional to 9,263.31, 12,782.18 and 5,284.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,263.31 : 12,782.18 = 5,284.19 : x
2. Step 2: Convert to fraction form
   9,263.31/12,782.18 = 5,284.19/x
3. Step 3: Cross multiply
   9,263.31x = 12,782.18 × 5,284.19
4. Step 4: Simplify right side
   9,263.31x = 67,543,426.14
5. Step 5: Solve for x
   x = 67,543,426.14/9,263.31
6. Step 6: Final answer
   x = 7,291.50