Finding the Fourth Proportional to 28,045.16, 42,066.72 and 11,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,045.16 : 42,066.72 = 11,404.72 : x
2. Step 2: Convert to fraction form
   28,045.16/42,066.72 = 11,404.72/x
3. Step 3: Cross multiply
   28,045.16x = 42,066.72 × 11,404.72
4. Step 4: Simplify right side
   28,045.16x = 479,759,162.92
5. Step 5: Solve for x
   x = 479,759,162.92/28,045.16
6. Step 6: Final answer
   x = 17,106.67