Finding the Fourth Proportional to 13,978.82, 19,287.60 and 10,204.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.82 : 19,287.60 = 10,204.04 : x
2. Step 2: Convert to fraction form
   13,978.82/19,287.60 = 10,204.04/x
3. Step 3: Cross multiply
   13,978.82x = 19,287.60 × 10,204.04
4. Step 4: Simplify right side
   13,978.82x = 196,811,490.12
5. Step 5: Solve for x
   x = 196,811,490.12/13,978.82
6. Step 6: Final answer
   x = 14,079.26