Finding the Fourth Proportional to 13,402.86, 18,495.81 and 7,434.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.86 : 18,495.81 = 7,434.37 : x
2. Step 2: Convert to fraction form
   13,402.86/18,495.81 = 7,434.37/x
3. Step 3: Cross multiply
   13,402.86x = 18,495.81 × 7,434.37
4. Step 4: Simplify right side
   13,402.86x = 137,504,694.99
5. Step 5: Solve for x
   x = 137,504,694.99/13,402.86
6. Step 6: Final answer
   x = 10,259.35