Finding the Fourth Proportional to 9,521.48, 13,153.34 and 7,604.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.48 : 13,153.34 = 7,604.78 : x
2. Step 2: Convert to fraction form
   9,521.48/13,153.34 = 7,604.78/x
3. Step 3: Cross multiply
   9,521.48x = 13,153.34 × 7,604.78
4. Step 4: Simplify right side
   9,521.48x = 100,028,251.82
5. Step 5: Solve for x
   x = 100,028,251.82/9,521.48
6. Step 6: Final answer
   x = 10,505.53