Finding the Fourth Proportional to 13,501.34, 18,631.42 and 7,368.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,501.34 : 18,631.42 = 7,368.81 : x
2. Step 2: Convert to fraction form
   13,501.34/18,631.42 = 7,368.81/x
3. Step 3: Cross multiply
   13,501.34x = 18,631.42 × 7,368.81
4. Step 4: Simplify right side
   13,501.34x = 137,291,375.59
5. Step 5: Solve for x
   x = 137,291,375.59/13,501.34
6. Step 6: Final answer
   x = 10,168.72