Finding the Fourth Proportional to 28,483.39, 42,732.38 and 8,762.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,483.39 : 42,732.38 = 8,762.12 : x
2. Step 2: Convert to fraction form
   28,483.39/42,732.38 = 8,762.12/x
3. Step 3: Cross multiply
   28,483.39x = 42,732.38 × 8,762.12
4. Step 4: Simplify right side
   28,483.39x = 374,426,241.45
5. Step 5: Solve for x
   x = 374,426,241.45/28,483.39
6. Step 6: Final answer
   x = 13,145.42