Finding the Fourth Proportional to 21,138.02, 31,699.64 and 7,095.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,138.02 : 31,699.64 = 7,095.05 : x
2. Step 2: Convert to fraction form
   21,138.02/31,699.64 = 7,095.05/x
3. Step 3: Cross multiply
   21,138.02x = 31,699.64 × 7,095.05
4. Step 4: Simplify right side
   21,138.02x = 224,910,530.78
5. Step 5: Solve for x
   x = 224,910,530.78/21,138.02
6. Step 6: Final answer
   x = 10,640.09