Finding the Fourth Proportional to 7,910.21, 10,930.55 and 7,525.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,910.21 : 10,930.55 = 7,525.91 : x
2. Step 2: Convert to fraction form
   7,910.21/10,930.55 = 7,525.91/x
3. Step 3: Cross multiply
   7,910.21x = 10,930.55 × 7,525.91
4. Step 4: Simplify right side
   7,910.21x = 82,262,325.25
5. Step 5: Solve for x
   x = 82,262,325.25/7,910.21
6. Step 6: Final answer
   x = 10,399.52