Finding the Fourth Proportional to 21,063.01, 29,080.61 and 13,108.45

Step by Step Solution

1. Step 1: Write the proportion equation
   21,063.01 : 29,080.61 = 13,108.45 : x
2. Step 2: Convert to fraction form
   21,063.01/29,080.61 = 13,108.45/x
3. Step 3: Cross multiply
   21,063.01x = 29,080.61 × 13,108.45
4. Step 4: Simplify right side
   21,063.01x = 381,201,722.15
5. Step 5: Solve for x
   x = 381,201,722.15/21,063.01
6. Step 6: Final answer
   x = 18,098.16