Finding the Fourth Proportional to 9,263.89, 12,782.98 and 5,284.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,263.89 : 12,782.98 = 5,284.77 : x
2. Step 2: Convert to fraction form
   9,263.89/12,782.98 = 5,284.77/x
3. Step 3: Cross multiply
   9,263.89x = 12,782.98 × 5,284.77
4. Step 4: Simplify right side
   9,263.89x = 67,555,109.21
5. Step 5: Solve for x
   x = 67,555,109.21/9,263.89
6. Step 6: Final answer
   x = 7,292.30