Finding the Fourth Proportional to 13,426.63, 18,529.37 and 7,458.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426.63 : 18,529.37 = 7,458.10 : x
2. Step 2: Convert to fraction form
   13,426.63/18,529.37 = 7,458.10/x
3. Step 3: Cross multiply
   13,426.63x = 18,529.37 × 7,458.10
4. Step 4: Simplify right side
   13,426.63x = 138,193,857.11
5. Step 5: Solve for x
   x = 138,193,857.11/13,426.63
6. Step 6: Final answer
   x = 10,292.52