Finding the Fourth Proportional to 19,026.72, 28,519.59 and 7,930.44

Step by Step Solution

1. Step 1: Write the proportion equation
   19,026.72 : 28,519.59 = 7,930.44 : x
2. Step 2: Convert to fraction form
   19,026.72/28,519.59 = 7,930.44/x
3. Step 3: Cross multiply
   19,026.72x = 28,519.59 × 7,930.44
4. Step 4: Simplify right side
   19,026.72x = 226,172,897.32
5. Step 5: Solve for x
   x = 226,172,897.32/19,026.72
6. Step 6: Final answer
   x = 11,887.12