Finding the Fourth Proportional to 9,931.32, 13,704.98 and 5,455.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,931.32 : 13,704.98 = 5,455.05 : x
2. Step 2: Convert to fraction form
   9,931.32/13,704.98 = 5,455.05/x
3. Step 3: Cross multiply
   9,931.32x = 13,704.98 × 5,455.05
4. Step 4: Simplify right side
   9,931.32x = 74,761,323.87
5. Step 5: Solve for x
   x = 74,761,323.87/9,931.32
6. Step 6: Final answer
   x = 7,527.83