Finding the Fourth Proportional to 21,061.23, 29,064.55 and 11,501.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.23 : 29,064.55 = 11,501.19 : x
2. Step 2: Convert to fraction form
   21,061.23/29,064.55 = 11,501.19/x
3. Step 3: Cross multiply
   21,061.23x = 29,064.55 × 11,501.19
4. Step 4: Simplify right side
   21,061.23x = 334,277,018.83
5. Step 5: Solve for x
   x = 334,277,018.83/21,061.23
6. Step 6: Final answer
   x = 15,871.68