Finding the Fourth Proportional to 28,294.82, 42,448.79 and 8,303.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,294.82 : 42,448.79 = 8,303.50 : x
2. Step 2: Convert to fraction form
   28,294.82/42,448.79 = 8,303.50/x
3. Step 3: Cross multiply
   28,294.82x = 42,448.79 × 8,303.50
4. Step 4: Simplify right side
   28,294.82x = 352,473,527.77
5. Step 5: Solve for x
   x = 352,473,527.77/28,294.82
6. Step 6: Final answer
   x = 12,457.18