Finding the Fourth Proportional to 14,582.63, 21,900.30 and 13,410.47

Step by Step Solution

1. Step 1: Write the proportion equation
   14,582.63 : 21,900.30 = 13,410.47 : x
2. Step 2: Convert to fraction form
   14,582.63/21,900.30 = 13,410.47/x
3. Step 3: Cross multiply
   14,582.63x = 21,900.30 × 13,410.47
4. Step 4: Simplify right side
   14,582.63x = 293,693,370.89
5. Step 5: Solve for x
   x = 293,693,370.89/14,582.63
6. Step 6: Final answer
   x = 20,139.94