Finding the Fourth Proportional to 18,789.30, 28,181.52 and 7,101

Step by Step Solution

1. Step 1: Write the proportion equation
   18,789.30 : 28,181.52 = 7,101 : x
2. Step 2: Convert to fraction form
   18,789.30/28,181.52 = 7,101/x
3. Step 3: Cross multiply
   18,789.30x = 28,181.52 × 7,101
4. Step 4: Simplify right side
   18,789.30x = 200,116,973.52
5. Step 5: Solve for x
   x = 200,116,973.52/18,789.30
6. Step 6: Final answer
   x = 10,650.58