Finding the Fourth Proportional to 13,346.73, 18,419.85 and 7,681.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,346.73 : 18,419.85 = 7,681.69 : x
2. Step 2: Convert to fraction form
   13,346.73/18,419.85 = 7,681.69/x
3. Step 3: Cross multiply
   13,346.73x = 18,419.85 × 7,681.69
4. Step 4: Simplify right side
   13,346.73x = 141,495,577.55
5. Step 5: Solve for x
   x = 141,495,577.55/13,346.73
6. Step 6: Final answer
   x = 10,601.52