Finding the Fourth Proportional to 12,066.78, 18,102.09 and 5,141.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,066.78 : 18,102.09 = 5,141.34 : x
2. Step 2: Convert to fraction form
   12,066.78/18,102.09 = 5,141.34/x
3. Step 3: Cross multiply
   12,066.78x = 18,102.09 × 5,141.34
4. Step 4: Simplify right side
   12,066.78x = 93,068,999.40
5. Step 5: Solve for x
   x = 93,068,999.40/12,066.78
6. Step 6: Final answer
   x = 7,712.83