Finding the Fourth Proportional to 21,060.32, 29,049.52 and 13,983.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,060.32 : 29,049.52 = 13,983.84 : x
2. Step 2: Convert to fraction form
   21,060.32/29,049.52 = 13,983.84/x
3. Step 3: Cross multiply
   21,060.32x = 29,049.52 × 13,983.84
4. Step 4: Simplify right side
   21,060.32x = 406,223,839.76
5. Step 5: Solve for x
   x = 406,223,839.76/21,060.32
6. Step 6: Final answer
   x = 19,288.59