Finding the Fourth Proportional to 13,898.14, 19,196.27 and 10,115.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,898.14 : 19,196.27 = 10,115.31 : x
2. Step 2: Convert to fraction form
   13,898.14/19,196.27 = 10,115.31/x
3. Step 3: Cross multiply
   13,898.14x = 19,196.27 × 10,115.31
4. Step 4: Simplify right side
   13,898.14x = 194,176,221.89
5. Step 5: Solve for x
   x = 194,176,221.89/13,898.14
6. Step 6: Final answer
   x = 13,971.38