Finding the Fourth Proportional to 9,199.83, 12,697.42 and 5,422.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,199.83 : 12,697.42 = 5,422.77 : x
2. Step 2: Convert to fraction form
   9,199.83/12,697.42 = 5,422.77/x
3. Step 3: Cross multiply
   9,199.83x = 12,697.42 × 5,422.77
4. Step 4: Simplify right side
   9,199.83x = 68,855,184.86
5. Step 5: Solve for x
   x = 68,855,184.86/9,199.83
6. Step 6: Final answer
   x = 7,484.40