Finding the Fourth Proportional to 9,225.48, 12,730.50 and 5,448.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,225.48 : 12,730.50 = 5,448.45 : x
2. Step 2: Convert to fraction form
   9,225.48/12,730.50 = 5,448.45/x
3. Step 3: Cross multiply
   9,225.48x = 12,730.50 × 5,448.45
4. Step 4: Simplify right side
   9,225.48x = 69,361,492.73
5. Step 5: Solve for x
   x = 69,361,492.73/9,225.48
6. Step 6: Final answer
   x = 7,518.47