Finding the Fourth Proportional to 15,598.42, 21,528.02 and 9,931.37

Step by Step Solution

1. Step 1: Write the proportion equation
   15,598.42 : 21,528.02 = 9,931.37 : x
2. Step 2: Convert to fraction form
   15,598.42/21,528.02 = 9,931.37/x
3. Step 3: Cross multiply
   15,598.42x = 21,528.02 × 9,931.37
4. Step 4: Simplify right side
   15,598.42x = 213,802,649.18
5. Step 5: Solve for x
   x = 213,802,649.18/15,598.42
6. Step 6: Final answer
   x = 13,706.69