Finding the Fourth Proportional to 21,044.00, 31,557.76 and 7,889.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,044.00 : 31,557.76 = 7,889.19 : x
2. Step 2: Convert to fraction form
   21,044.00/31,557.76 = 7,889.19/x
3. Step 3: Cross multiply
   21,044.00x = 31,557.76 × 7,889.19
4. Step 4: Simplify right side
   21,044.00x = 248,965,144.89
5. Step 5: Solve for x
   x = 248,965,144.89/21,044.00
6. Step 6: Final answer
   x = 11,830.70