Finding the Fourth Proportional to 28,109.32, 42,134.68 and 11,462.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,109.32 : 42,134.68 = 11,462.12 : x
2. Step 2: Convert to fraction form
   28,109.32/42,134.68 = 11,462.12/x
3. Step 3: Cross multiply
   28,109.32x = 42,134.68 × 11,462.12
4. Step 4: Simplify right side
   28,109.32x = 482,952,758.32
5. Step 5: Solve for x
   x = 482,952,758.32/28,109.32
6. Step 6: Final answer
   x = 17,181.23