Finding the Fourth Proportional to 21,097.83, 31,637.52 and 10,007.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,097.83 : 31,637.52 = 10,007.69 : x
2. Step 2: Convert to fraction form
   21,097.83/31,637.52 = 10,007.69/x
3. Step 3: Cross multiply
   21,097.83x = 31,637.52 × 10,007.69
4. Step 4: Simplify right side
   21,097.83x = 316,618,334.34
5. Step 5: Solve for x
   x = 316,618,334.34/21,097.83
6. Step 6: Final answer
   x = 15,007.15