Finding the Fourth Proportional to 13,133.14, 18,123.74 and 7,164.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,133.14 : 18,123.74 = 7,164.82 : x
2. Step 2: Convert to fraction form
   13,133.14/18,123.74 = 7,164.82/x
3. Step 3: Cross multiply
   13,133.14x = 18,123.74 × 7,164.82
4. Step 4: Simplify right side
   13,133.14x = 129,853,334.83
5. Step 5: Solve for x
   x = 129,853,334.83/13,133.14
6. Step 6: Final answer
   x = 9,887.46