Finding the Fourth Proportional to 14,111.19, 19,472.69 and 8,142.51

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.19 : 19,472.69 = 8,142.51 : x
2. Step 2: Convert to fraction form
   14,111.19/19,472.69 = 8,142.51/x
3. Step 3: Cross multiply
   14,111.19x = 19,472.69 × 8,142.51
4. Step 4: Simplify right side
   14,111.19x = 158,556,532.34
5. Step 5: Solve for x
   x = 158,556,532.34/14,111.19
6. Step 6: Final answer
   x = 11,236.23