Finding the Fourth Proportional to 12,760.78, 19,144.80 and 4,971.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.78 : 19,144.80 = 4,971.82 : x
2. Step 2: Convert to fraction form
   12,760.78/19,144.80 = 4,971.82/x
3. Step 3: Cross multiply
   12,760.78x = 19,144.80 × 4,971.82
4. Step 4: Simplify right side
   12,760.78x = 95,184,499.54
5. Step 5: Solve for x
   x = 95,184,499.54/12,760.78
6. Step 6: Final answer
   x = 7,459.14