Finding the Fourth Proportional to 10,816.02, 16,225.62 and 3,418.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.02 : 16,225.62 = 3,418.80 : x
2. Step 2: Convert to fraction form
   10,816.02/16,225.62 = 3,418.80/x
3. Step 3: Cross multiply
   10,816.02x = 16,225.62 × 3,418.80
4. Step 4: Simplify right side
   10,816.02x = 55,472,068.53
5. Step 5: Solve for x
   x = 55,472,068.53/10,816.02
6. Step 6: Final answer
   x = 5,128.70