Finding the Fourth Proportional to 9,294.84, 12,826.40 and 5,518.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,294.84 : 12,826.40 = 5,518.16 : x
2. Step 2: Convert to fraction form
   9,294.84/12,826.40 = 5,518.16/x
3. Step 3: Cross multiply
   9,294.84x = 12,826.40 × 5,518.16
4. Step 4: Simplify right side
   9,294.84x = 70,778,127.42
5. Step 5: Solve for x
   x = 70,778,127.42/9,294.84
6. Step 6: Final answer
   x = 7,614.78