Finding the Fourth Proportional to 12,093.48, 18,129.28 and 4,300.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,093.48 : 18,129.28 = 4,300.47 : x
2. Step 2: Convert to fraction form
   12,093.48/18,129.28 = 4,300.47/x
3. Step 3: Cross multiply
   12,093.48x = 18,129.28 × 4,300.47
4. Step 4: Simplify right side
   12,093.48x = 77,964,424.76
5. Step 5: Solve for x
   x = 77,964,424.76/12,093.48
6. Step 6: Final answer
   x = 6,446.81