Finding the Fourth Proportional to 9,895.83, 13,655.72 and 5,418.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.83 : 13,655.72 = 5,418.74 : x
2. Step 2: Convert to fraction form
   9,895.83/13,655.72 = 5,418.74/x
3. Step 3: Cross multiply
   9,895.83x = 13,655.72 × 5,418.74
4. Step 4: Simplify right side
   9,895.83x = 73,996,700.82
5. Step 5: Solve for x
   x = 73,996,700.82/9,895.83
6. Step 6: Final answer
   x = 7,477.56