Finding the Fourth Proportional to 10,909.59, 16,358.91 and 5,070.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,909.59 : 16,358.91 = 5,070.30 : x
2. Step 2: Convert to fraction form
   10,909.59/16,358.91 = 5,070.30/x
3. Step 3: Cross multiply
   10,909.59x = 16,358.91 × 5,070.30
4. Step 4: Simplify right side
   10,909.59x = 82,944,581.37
5. Step 5: Solve for x
   x = 82,944,581.37/10,909.59
6. Step 6: Final answer
   x = 7,602.91