Finding the Fourth Proportional to 12,460.30, 18,693.59 and 4,140.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,460.30 : 18,693.59 = 4,140.36 : x
2. Step 2: Convert to fraction form
   12,460.30/18,693.59 = 4,140.36/x
3. Step 3: Cross multiply
   12,460.30x = 18,693.59 × 4,140.36
4. Step 4: Simplify right side
   12,460.30x = 77,398,098.82
5. Step 5: Solve for x
   x = 77,398,098.82/12,460.30
6. Step 6: Final answer
   x = 6,211.58