Finding the Fourth Proportional to 21,402.17, 32,074.09 and 10,308.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,402.17 : 32,074.09 = 10,308.05 : x
2. Step 2: Convert to fraction form
   21,402.17/32,074.09 = 10,308.05/x
3. Step 3: Cross multiply
   21,402.17x = 32,074.09 × 10,308.05
4. Step 4: Simplify right side
   21,402.17x = 330,621,323.42
5. Step 5: Solve for x
   x = 330,621,323.42/21,402.17
6. Step 6: Final answer
   x = 15,448.03