Finding the Fourth Proportional to 8,775.98, 12,109.77 and 5,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,775.98 : 12,109.77 = 5,238.50 : x
2. Step 2: Convert to fraction form
   8,775.98/12,109.77 = 5,238.50/x
3. Step 3: Cross multiply
   8,775.98x = 12,109.77 × 5,238.50
4. Step 4: Simplify right side
   8,775.98x = 63,437,030.15
5. Step 5: Solve for x
   x = 63,437,030.15/8,775.98
6. Step 6: Final answer
   x = 7,228.48