Finding the Fourth Proportional to 13,123.66, 18,110.71 and 8,410.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.66 : 18,110.71 = 8,410.68 : x
2. Step 2: Convert to fraction form
   13,123.66/18,110.71 = 8,410.68/x
3. Step 3: Cross multiply
   13,123.66x = 18,110.71 × 8,410.68
4. Step 4: Simplify right side
   13,123.66x = 152,323,386.38
5. Step 5: Solve for x
   x = 152,323,386.38/13,123.66
6. Step 6: Final answer
   x = 11,606.78