Finding the Fourth Proportional to 9,354.12, 12,911.34 and 5,529.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.12 : 12,911.34 = 5,529.30 : x
2. Step 2: Convert to fraction form
   9,354.12/12,911.34 = 5,529.30/x
3. Step 3: Cross multiply
   9,354.12x = 12,911.34 × 5,529.30
4. Step 4: Simplify right side
   9,354.12x = 71,390,672.26
5. Step 5: Solve for x
   x = 71,390,672.26/9,354.12
6. Step 6: Final answer
   x = 7,632.00