Finding the Fourth Proportional to 9,380.80, 12,956.52 and 7,498.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,380.80 : 12,956.52 = 7,498.90 : x
2. Step 2: Convert to fraction form
   9,380.80/12,956.52 = 7,498.90/x
3. Step 3: Cross multiply
   9,380.80x = 12,956.52 × 7,498.90
4. Step 4: Simplify right side
   9,380.80x = 97,159,647.83
5. Step 5: Solve for x
   x = 97,159,647.83/9,380.80
6. Step 6: Final answer
   x = 10,357.29