Finding the Fourth Proportional to 11,019.02, 16,521.20 and 5,685.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.02 : 16,521.20 = 5,685.53 : x
2. Step 2: Convert to fraction form
   11,019.02/16,521.20 = 5,685.53/x
3. Step 3: Cross multiply
   11,019.02x = 16,521.20 × 5,685.53
4. Step 4: Simplify right side
   11,019.02x = 93,931,688.52
5. Step 5: Solve for x
   x = 93,931,688.52/11,019.02
6. Step 6: Final answer
   x = 8,524.50