Finding the Fourth Proportional to 12,110.78, 18,174.56 and 4,715.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,110.78 : 18,174.56 = 4,715.30 : x
2. Step 2: Convert to fraction form
   12,110.78/18,174.56 = 4,715.30/x
3. Step 3: Cross multiply
   12,110.78x = 18,174.56 × 4,715.30
4. Step 4: Simplify right side
   12,110.78x = 85,698,388.32
5. Step 5: Solve for x
   x = 85,698,388.32/12,110.78
6. Step 6: Final answer
   x = 7,076.21