Finding the Fourth Proportional to 14,191.18, 19,588.37 and 9,155.54

Step by Step Solution

1. Step 1: Write the proportion equation
   14,191.18 : 19,588.37 = 9,155.54 : x
2. Step 2: Convert to fraction form
   14,191.18/19,588.37 = 9,155.54/x
3. Step 3: Cross multiply
   14,191.18x = 19,588.37 × 9,155.54
4. Step 4: Simplify right side
   14,191.18x = 179,342,059.29
5. Step 5: Solve for x
   x = 179,342,059.29/14,191.18
6. Step 6: Final answer
   x = 12,637.58