Finding the Fourth Proportional to 12,753.63, 19,112.82 and 7,134.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,753.63 : 19,112.82 = 7,134.25 : x
2. Step 2: Convert to fraction form
   12,753.63/19,112.82 = 7,134.25/x
3. Step 3: Cross multiply
   12,753.63x = 19,112.82 × 7,134.25
4. Step 4: Simplify right side
   12,753.63x = 136,355,636.09
5. Step 5: Solve for x
   x = 136,355,636.09/12,753.63
6. Step 6: Final answer
   x = 10,691.52