Finding the Fourth Proportional to 12,860.76, 19,293.72 and 5,465.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,860.76 : 19,293.72 = 5,465.16 : x
2. Step 2: Convert to fraction form
   12,860.76/19,293.72 = 5,465.16/x
3. Step 3: Cross multiply
   12,860.76x = 19,293.72 × 5,465.16
4. Step 4: Simplify right side
   12,860.76x = 105,443,266.80
5. Step 5: Solve for x
   x = 105,443,266.80/12,860.76
6. Step 6: Final answer
   x = 8,198.84