Finding the Fourth Proportional to 13,904.02, 19,196.49 and 12,409.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,904.02 : 19,196.49 = 12,409.39 : x
2. Step 2: Convert to fraction form
   13,904.02/19,196.49 = 12,409.39/x
3. Step 3: Cross multiply
   13,904.02x = 19,196.49 × 12,409.39
4. Step 4: Simplify right side
   13,904.02x = 238,216,731.04
5. Step 5: Solve for x
   x = 238,216,731.04/13,904.02
6. Step 6: Final answer
   x = 17,132.94