Finding the Fourth Proportional to 12,096.96, 16,693.60 and 7,128

Step by Step Solution

1. Step 1: Write the proportion equation
   12,096.96 : 16,693.60 = 7,128 : x
2. Step 2: Convert to fraction form
   12,096.96/16,693.60 = 7,128/x
3. Step 3: Cross multiply
   12,096.96x = 16,693.60 × 7,128
4. Step 4: Simplify right side
   12,096.96x = 118,991,980.80
5. Step 5: Solve for x
   x = 118,991,980.80/12,096.96
6. Step 6: Final answer
   x = 9,836.52