Finding the Fourth Proportional to 9,211.32, 12,728.88 and 7,532.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,211.32 : 12,728.88 = 7,532.12 : x
2. Step 2: Convert to fraction form
   9,211.32/12,728.88 = 7,532.12/x
3. Step 3: Cross multiply
   9,211.32x = 12,728.88 × 7,532.12
4. Step 4: Simplify right side
   9,211.32x = 95,875,483.45
5. Step 5: Solve for x
   x = 95,875,483.45/9,211.32
6. Step 6: Final answer
   x = 10,408.44