Finding the Fourth Proportional to 28,019.93, 42,037.99 and 8,298.86

Step by Step Solution

1. Step 1: Write the proportion equation
   28,019.93 : 42,037.99 = 8,298.86 : x
2. Step 2: Convert to fraction form
   28,019.93/42,037.99 = 8,298.86/x
3. Step 3: Cross multiply
   28,019.93x = 42,037.99 × 8,298.86
4. Step 4: Simplify right side
   28,019.93x = 348,867,162.75
5. Step 5: Solve for x
   x = 348,867,162.75/28,019.93
6. Step 6: Final answer
   x = 12,450.68