Finding the Fourth Proportional to 21,061.35, 29,064.74 and 11,501.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.35 : 29,064.74 = 11,501.33 : x
2. Step 2: Convert to fraction form
   21,061.35/29,064.74 = 11,501.33/x
3. Step 3: Cross multiply
   21,061.35x = 29,064.74 × 11,501.33
4. Step 4: Simplify right side
   21,061.35x = 334,283,166.10
5. Step 5: Solve for x
   x = 334,283,166.10/21,061.35
6. Step 6: Final answer
   x = 15,871.88