Finding the Fourth Proportional to 19,697.12, 29,556.72 and 10,462.88

Step by Step Solution

1. Step 1: Write the proportion equation
   19,697.12 : 29,556.72 = 10,462.88 : x
2. Step 2: Convert to fraction form
   19,697.12/29,556.72 = 10,462.88/x
3. Step 3: Cross multiply
   19,697.12x = 29,556.72 × 10,462.88
4. Step 4: Simplify right side
   19,697.12x = 309,248,414.55
5. Step 5: Solve for x
   x = 309,248,414.55/19,697.12
6. Step 6: Final answer
   x = 15,700.18