Finding the Fourth Proportional to 21,098.47, 31,659.59 and 14,529.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,098.47 : 31,659.59 = 14,529.91 : x
2. Step 2: Convert to fraction form
   21,098.47/31,659.59 = 14,529.91/x
3. Step 3: Cross multiply
   21,098.47x = 31,659.59 × 14,529.91
4. Step 4: Simplify right side
   21,098.47x = 460,010,920.69
5. Step 5: Solve for x
   x = 460,010,920.69/21,098.47
6. Step 6: Final answer
   x = 21,803.05