Finding the Fourth Proportional to 19,196.16, 28,807.68 and 8,814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,196.16 : 28,807.68 = 8,814.72 : x
2. Step 2: Convert to fraction form
   19,196.16/28,807.68 = 8,814.72/x
3. Step 3: Cross multiply
   19,196.16x = 28,807.68 × 8,814.72
4. Step 4: Simplify right side
   19,196.16x = 253,931,633.05
5. Step 5: Solve for x
   x = 253,931,633.05/19,196.16
6. Step 6: Final answer
   x = 13,228.25