Finding the Fourth Proportional to 12,865.43, 19,307.37 and 5,475.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,865.43 : 19,307.37 = 5,475.08 : x
2. Step 2: Convert to fraction form
   12,865.43/19,307.37 = 5,475.08/x
3. Step 3: Cross multiply
   12,865.43x = 19,307.37 × 5,475.08
4. Step 4: Simplify right side
   12,865.43x = 105,709,395.34
5. Step 5: Solve for x
   x = 105,709,395.34/12,865.43
6. Step 6: Final answer
   x = 8,216.55