Finding the Fourth Proportional to 13,436.89, 18,542.10 and 7,468.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,436.89 : 18,542.10 = 7,468.35 : x
2. Step 2: Convert to fraction form
   13,436.89/18,542.10 = 7,468.35/x
3. Step 3: Cross multiply
   13,436.89x = 18,542.10 × 7,468.35
4. Step 4: Simplify right side
   13,436.89x = 138,478,892.54
5. Step 5: Solve for x
   x = 138,478,892.54/13,436.89
6. Step 6: Final answer
   x = 10,305.88