Finding the Fourth Proportional to 19,131.25, 28,692.32 and 8,038.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,131.25 : 28,692.32 = 8,038.15 : x
2. Step 2: Convert to fraction form
   19,131.25/28,692.32 = 8,038.15/x
3. Step 3: Cross multiply
   19,131.25x = 28,692.32 × 8,038.15
4. Step 4: Simplify right side
   19,131.25x = 230,633,131.82
5. Step 5: Solve for x
   x = 230,633,131.82/19,131.25
6. Step 6: Final answer
   x = 12,055.31