Finding the Fourth Proportional to 13,429.48, 18,526.72 and 8,948.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,429.48 : 18,526.72 = 8,948.87 : x
2. Step 2: Convert to fraction form
   13,429.48/18,526.72 = 8,948.87/x
3. Step 3: Cross multiply
   13,429.48x = 18,526.72 × 8,948.87
4. Step 4: Simplify right side
   13,429.48x = 165,793,093.80
5. Step 5: Solve for x
   x = 165,793,093.80/13,429.48
6. Step 6: Final answer
   x = 12,345.46