Finding the Fourth Proportional to 12,105.88, 16,706.05 and 7,070.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.88 : 16,706.05 = 7,070.31 : x
2. Step 2: Convert to fraction form
   12,105.88/16,706.05 = 7,070.31/x
3. Step 3: Cross multiply
   12,105.88x = 16,706.05 × 7,070.31
4. Step 4: Simplify right side
   12,105.88x = 118,116,934.70
5. Step 5: Solve for x
   x = 118,116,934.70/12,105.88
6. Step 6: Final answer
   x = 9,756.99