Finding the Fourth Proportional to 10,521.99, 14,522.15 and 10,049.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521.99 : 14,522.15 = 10,049.05 : x
2. Step 2: Convert to fraction form
   10,521.99/14,522.15 = 10,049.05/x
3. Step 3: Cross multiply
   10,521.99x = 14,522.15 × 10,049.05
4. Step 4: Simplify right side
   10,521.99x = 145,933,830.79
5. Step 5: Solve for x
   x = 145,933,830.79/10,521.99
6. Step 6: Final answer
   x = 13,869.41