Finding the Fourth Proportional to 13,402.69, 18,496.76 and 7,435.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.69 : 18,496.76 = 7,435.51 : x
2. Step 2: Convert to fraction form
   13,402.69/18,496.76 = 7,435.51/x
3. Step 3: Cross multiply
   13,402.69x = 18,496.76 × 7,435.51
4. Step 4: Simplify right side
   13,402.69x = 137,532,760.53
5. Step 5: Solve for x
   x = 137,532,760.53/13,402.69
6. Step 6: Final answer
   x = 10,261.58