Finding the Fourth Proportional to 13,402.35, 18,495.68 and 7,434.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.35 : 18,495.68 = 7,434.59 : x
2. Step 2: Convert to fraction form
   13,402.35/18,495.68 = 7,434.59/x
3. Step 3: Cross multiply
   13,402.35x = 18,495.68 × 7,434.59
4. Step 4: Simplify right side
   13,402.35x = 137,507,667.92
5. Step 5: Solve for x
   x = 137,507,667.92/13,402.35
6. Step 6: Final answer
   x = 10,259.97