Finding the Fourth Proportional to 14,012.18, 19,336.54 and 7,638.83

Step by Step Solution

1. Step 1: Write the proportion equation
   14,012.18 : 19,336.54 = 7,638.83 : x
2. Step 2: Convert to fraction form
   14,012.18/19,336.54 = 7,638.83/x
3. Step 3: Cross multiply
   14,012.18x = 19,336.54 × 7,638.83
4. Step 4: Simplify right side
   14,012.18x = 147,708,406.97
5. Step 5: Solve for x
   x = 147,708,406.97/14,012.18
6. Step 6: Final answer
   x = 10,541.43