Finding the Fourth Proportional to 7,321.86, 10,983.60 and 2,128.14

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.86 : 10,983.60 = 2,128.14 : x
2. Step 2: Convert to fraction form
   7,321.86/10,983.60 = 2,128.14/x
3. Step 3: Cross multiply
   7,321.86x = 10,983.60 × 2,128.14
4. Step 4: Simplify right side
   7,321.86x = 23,374,638.50
5. Step 5: Solve for x
   x = 23,374,638.50/7,321.86
6. Step 6: Final answer
   x = 3,192.45