Finding the Fourth Proportional to 21,458.96, 32,181.80 and 10,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,458.96 : 32,181.80 = 10,358.72 : x
2. Step 2: Convert to fraction form
   21,458.96/32,181.80 = 10,358.72/x
3. Step 3: Cross multiply
   21,458.96x = 32,181.80 × 10,358.72
4. Step 4: Simplify right side
   21,458.96x = 333,362,255.30
5. Step 5: Solve for x
   x = 333,362,255.30/21,458.96
6. Step 6: Final answer
   x = 15,534.87