Finding the Fourth Proportional to 19,066.02, 28,567.38 and 13,491.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,066.02 : 28,567.38 = 13,491.72 : x
2. Step 2: Convert to fraction form
   19,066.02/28,567.38 = 13,491.72/x
3. Step 3: Cross multiply
   19,066.02x = 28,567.38 × 13,491.72
4. Step 4: Simplify right side
   19,066.02x = 385,423,092.09
5. Step 5: Solve for x
   x = 385,423,092.09/19,066.02
6. Step 6: Final answer
   x = 20,215.18