Finding the Fourth Proportional to 9,265.50, 12,788.01 and 5,539.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,265.50 : 12,788.01 = 5,539.50 : x
2. Step 2: Convert to fraction form
   9,265.50/12,788.01 = 5,539.50/x
3. Step 3: Cross multiply
   9,265.50x = 12,788.01 × 5,539.50
4. Step 4: Simplify right side
   9,265.50x = 70,839,181.40
5. Step 5: Solve for x
   x = 70,839,181.40/9,265.50
6. Step 6: Final answer
   x = 7,645.48