Finding the Fourth Proportional to 9,774.44, 13,488.72 and 5,298.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,774.44 : 13,488.72 = 5,298.20 : x
2. Step 2: Convert to fraction form
   9,774.44/13,488.72 = 5,298.20/x
3. Step 3: Cross multiply
   9,774.44x = 13,488.72 × 5,298.20
4. Step 4: Simplify right side
   9,774.44x = 71,465,868.86
5. Step 5: Solve for x
   x = 71,465,868.86/9,774.44
6. Step 6: Final answer
   x = 7,311.51