Finding the Fourth Proportional to 9,011.99, 12,434.61 and 5,233.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,011.99 : 12,434.61 = 5,233.20 : x
2. Step 2: Convert to fraction form
   9,011.99/12,434.61 = 5,233.20/x
3. Step 3: Cross multiply
   9,011.99x = 12,434.61 × 5,233.20
4. Step 4: Simplify right side
   9,011.99x = 65,072,801.05
5. Step 5: Solve for x
   x = 65,072,801.05/9,011.99
6. Step 6: Final answer
   x = 7,220.70