Finding the Fourth Proportional to 21,488.76, 29,655 and 12,058.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,488.76 : 29,655 = 12,058.02 : x
2. Step 2: Convert to fraction form
   21,488.76/29,655 = 12,058.02/x
3. Step 3: Cross multiply
   21,488.76x = 29,655 × 12,058.02
4. Step 4: Simplify right side
   21,488.76x = 357,580,583.10
5. Step 5: Solve for x
   x = 357,580,583.10/21,488.76
6. Step 6: Final answer
   x = 16,640.35