Finding the Fourth Proportional to 12,669.54, 19,007.55 and 5,271.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.54 : 19,007.55 = 5,271.54 : x
2. Step 2: Convert to fraction form
   12,669.54/19,007.55 = 5,271.54/x
3. Step 3: Cross multiply
   12,669.54x = 19,007.55 × 5,271.54
4. Step 4: Simplify right side
   12,669.54x = 100,199,060.13
5. Step 5: Solve for x
   x = 100,199,060.13/12,669.54
6. Step 6: Final answer
   x = 7,908.66