Finding the Fourth Proportional to 13,426.52, 18,528.84 and 7,458.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426.52 : 18,528.84 = 7,458.72 : x
2. Step 2: Convert to fraction form
   13,426.52/18,528.84 = 7,458.72/x
3. Step 3: Cross multiply
   13,426.52x = 18,528.84 × 7,458.72
4. Step 4: Simplify right side
   13,426.52x = 138,201,429.48
5. Step 5: Solve for x
   x = 138,201,429.48/13,426.52
6. Step 6: Final answer
   x = 10,293.17