Finding the Fourth Proportional to 9,383.40, 12,948.93 and 5,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.40 : 12,948.93 = 5,404.50 : x
2. Step 2: Convert to fraction form
   9,383.40/12,948.93 = 5,404.50/x
3. Step 3: Cross multiply
   9,383.40x = 12,948.93 × 5,404.50
4. Step 4: Simplify right side
   9,383.40x = 69,982,492.19
5. Step 5: Solve for x
   x = 69,982,492.19/9,383.40
6. Step 6: Final answer
   x = 7,458.12