Finding the Fourth Proportional to 12,468.63, 17,208.30 and 7,164.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,468.63 : 17,208.30 = 7,164.48 : x
2. Step 2: Convert to fraction form
   12,468.63/17,208.30 = 7,164.48/x
3. Step 3: Cross multiply
   12,468.63x = 17,208.30 × 7,164.48
4. Step 4: Simplify right side
   12,468.63x = 123,288,521.18
5. Step 5: Solve for x
   x = 123,288,521.18/12,468.63
6. Step 6: Final answer
   x = 9,887.90