Finding the Fourth Proportional to 9,080.45, 12,538.01 and 7,319.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,080.45 : 12,538.01 = 7,319.91 : x
2. Step 2: Convert to fraction form
   9,080.45/12,538.01 = 7,319.91/x
3. Step 3: Cross multiply
   9,080.45x = 12,538.01 × 7,319.91
4. Step 4: Simplify right side
   9,080.45x = 91,777,123.08
5. Step 5: Solve for x
   x = 91,777,123.08/9,080.45
6. Step 6: Final answer
   x = 10,107.12