Finding the Fourth Proportional to 8,123.56, 12,188.48 and 3,192.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.56 : 12,188.48 = 3,192.32 : x
2. Step 2: Convert to fraction form
   8,123.56/12,188.48 = 3,192.32/x
3. Step 3: Cross multiply
   8,123.56x = 12,188.48 × 3,192.32
4. Step 4: Simplify right side
   8,123.56x = 38,909,528.47
5. Step 5: Solve for x
   x = 38,909,528.47/8,123.56
6. Step 6: Final answer
   x = 4,789.71