Finding the Fourth Proportional to 19,072.16, 28,614.72 and 5,926.40

Step by Step Solution

1. Step 1: Write the proportion equation
   19,072.16 : 28,614.72 = 5,926.40 : x
2. Step 2: Convert to fraction form
   19,072.16/28,614.72 = 5,926.40/x
3. Step 3: Cross multiply
   19,072.16x = 28,614.72 × 5,926.40
4. Step 4: Simplify right side
   19,072.16x = 169,582,276.61
5. Step 5: Solve for x
   x = 169,582,276.61/19,072.16
6. Step 6: Final answer
   x = 8,891.61