Finding the Fourth Proportional to 21,058.82, 29,060.71 and 11,498.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,058.82 : 29,060.71 = 11,498.98 : x
2. Step 2: Convert to fraction form
   21,058.82/29,060.71 = 11,498.98/x
3. Step 3: Cross multiply
   21,058.82x = 29,060.71 × 11,498.98
4. Step 4: Simplify right side
   21,058.82x = 334,168,494.03
5. Step 5: Solve for x
   x = 334,168,494.03/21,058.82
6. Step 6: Final answer
   x = 15,868.34