Finding the Fourth Proportional to 13,651.31, 18,838.79 and 7,683.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,651.31 : 18,838.79 = 7,683.02 : x
2. Step 2: Convert to fraction form
   13,651.31/18,838.79 = 7,683.02/x
3. Step 3: Cross multiply
   13,651.31x = 18,838.79 × 7,683.02
4. Step 4: Simplify right side
   13,651.31x = 144,738,800.35
5. Step 5: Solve for x
   x = 144,738,800.35/13,651.31
6. Step 6: Final answer
   x = 10,602.56