Finding the Fourth Proportional to 25,321.69, 34,942.14 and 13,991.06

Step by Step Solution

1. Step 1: Write the proportion equation
   25,321.69 : 34,942.14 = 13,991.06 : x
2. Step 2: Convert to fraction form
   25,321.69/34,942.14 = 13,991.06/x
3. Step 3: Cross multiply
   25,321.69x = 34,942.14 × 13,991.06
4. Step 4: Simplify right side
   25,321.69x = 488,877,507.31
5. Step 5: Solve for x
   x = 488,877,507.31/25,321.69
6. Step 6: Final answer
   x = 19,306.67