Finding the Fourth Proportional to 15,598.29, 21,530.78 and 12,417.42

Step by Step Solution

1. Step 1: Write the proportion equation
   15,598.29 : 21,530.78 = 12,417.42 : x
2. Step 2: Convert to fraction form
   15,598.29/21,530.78 = 12,417.42/x
3. Step 3: Cross multiply
   15,598.29x = 21,530.78 × 12,417.42
4. Step 4: Simplify right side
   15,598.29x = 267,356,676.10
5. Step 5: Solve for x
   x = 267,356,676.10/15,598.29
6. Step 6: Final answer
   x = 17,140.13