Finding the Fourth Proportional to 21,619.53, 29,835 and 12,060.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,619.53 : 29,835 = 12,060.32 : x
2. Step 2: Convert to fraction form
   21,619.53/29,835 = 12,060.32/x
3. Step 3: Cross multiply
   21,619.53x = 29,835 × 12,060.32
4. Step 4: Simplify right side
   21,619.53x = 359,819,498.03
5. Step 5: Solve for x
   x = 359,819,498.03/21,619.53
6. Step 6: Final answer
   x = 16,643.26