Finding the Fourth Proportional to 9,920.88, 14,869.98 and 4,070.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920.88 : 14,869.98 = 4,070.25 : x
2. Step 2: Convert to fraction form
   9,920.88/14,869.98 = 4,070.25/x
3. Step 3: Cross multiply
   9,920.88x = 14,869.98 × 4,070.25
4. Step 4: Simplify right side
   9,920.88x = 60,524,536.10
5. Step 5: Solve for x
   x = 60,524,536.10/9,920.88
6. Step 6: Final answer
   x = 6,100.72