Finding the Fourth Proportional to 19,314.10, 28,949.55 and 10,998.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,314.10 : 28,949.55 = 10,998.10 : x
2. Step 2: Convert to fraction form
   19,314.10/28,949.55 = 10,998.10/x
3. Step 3: Cross multiply
   19,314.10x = 28,949.55 × 10,998.10
4. Step 4: Simplify right side
   19,314.10x = 318,390,045.86
5. Step 5: Solve for x
   x = 318,390,045.86/19,314.10
6. Step 6: Final answer
   x = 16,484.85