Finding the Fourth Proportional to 9,898.77, 13,660.18 and 5,422.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.77 : 13,660.18 = 5,422.25 : x
2. Step 2: Convert to fraction form
   9,898.77/13,660.18 = 5,422.25/x
3. Step 3: Cross multiply
   9,898.77x = 13,660.18 × 5,422.25
4. Step 4: Simplify right side
   9,898.77x = 74,068,931.60
5. Step 5: Solve for x
   x = 74,068,931.60/9,898.77
6. Step 6: Final answer
   x = 7,482.64