Finding the Fourth Proportional to 21,116.89, 29,152.88 and 14,412.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,116.89 : 29,152.88 = 14,412.52 : x
2. Step 2: Convert to fraction form
   21,116.89/29,152.88 = 14,412.52/x
3. Step 3: Cross multiply
   21,116.89x = 29,152.88 × 14,412.52
4. Step 4: Simplify right side
   21,116.89x = 420,166,394.00
5. Step 5: Solve for x
   x = 420,166,394.00/21,116.89
6. Step 6: Final answer
   x = 19,897.17