Finding the Fourth Proportional to 12,780.38, 19,173.82 and 4,882.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,780.38 : 19,173.82 = 4,882.88 : x
2. Step 2: Convert to fraction form
   12,780.38/19,173.82 = 4,882.88/x
3. Step 3: Cross multiply
   12,780.38x = 19,173.82 × 4,882.88
4. Step 4: Simplify right side
   12,780.38x = 93,623,462.20
5. Step 5: Solve for x
   x = 93,623,462.20/12,780.38
6. Step 6: Final answer
   x = 7,325.56