Finding the Fourth Proportional to 21,048.42, 29,046.72 and 11,488.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,048.42 : 29,046.72 = 11,488.26 : x
2. Step 2: Convert to fraction form
   21,048.42/29,046.72 = 11,488.26/x
3. Step 3: Cross multiply
   21,048.42x = 29,046.72 × 11,488.26
4. Step 4: Simplify right side
   21,048.42x = 333,696,271.51
5. Step 5: Solve for x
   x = 333,696,271.51/21,048.42
6. Step 6: Final answer
   x = 15,853.74