Finding the Fourth Proportional to 21,071.00, 31,606.30 and 8,588.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,071.00 : 31,606.30 = 8,588.09 : x
2. Step 2: Convert to fraction form
   21,071.00/31,606.30 = 8,588.09/x
3. Step 3: Cross multiply
   21,071.00x = 31,606.30 × 8,588.09
4. Step 4: Simplify right side
   21,071.00x = 271,437,838.72
5. Step 5: Solve for x
   x = 271,437,838.72/21,071.00
6. Step 6: Final answer
   x = 12,882.06