Finding the Fourth Proportional to 12,468.52, 17,207.40 and 7,165.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,468.52 : 17,207.40 = 7,165.45 : x
2. Step 2: Convert to fraction form
   12,468.52/17,207.40 = 7,165.45/x
3. Step 3: Cross multiply
   12,468.52x = 17,207.40 × 7,165.45
4. Step 4: Simplify right side
   12,468.52x = 123,298,764.33
5. Step 5: Solve for x
   x = 123,298,764.33/12,468.52
6. Step 6: Final answer
   x = 9,888.81