Finding the Fourth Proportional to 10,506.79, 14,494.78 and 7,521.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,506.79 : 14,494.78 = 7,521.54 : x
2. Step 2: Convert to fraction form
   10,506.79/14,494.78 = 7,521.54/x
3. Step 3: Cross multiply
   10,506.79x = 14,494.78 × 7,521.54
4. Step 4: Simplify right side
   10,506.79x = 109,022,957.48
5. Step 5: Solve for x
   x = 109,022,957.48/10,506.79
6. Step 6: Final answer
   x = 10,376.43