Finding the Fourth Proportional to 21,631.05, 29,849.04 and 12,070.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,631.05 : 29,849.04 = 12,070.08 : x
2. Step 2: Convert to fraction form
   21,631.05/29,849.04 = 12,070.08/x
3. Step 3: Cross multiply
   21,631.05x = 29,849.04 × 12,070.08
4. Step 4: Simplify right side
   21,631.05x = 360,280,300.72
5. Step 5: Solve for x
   x = 360,280,300.72/21,631.05
6. Step 6: Final answer
   x = 16,655.70