Finding the Fourth Proportional to 9,931.58, 13,704.76 and 5,455.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,931.58 : 13,704.76 = 5,455.10 : x
2. Step 2: Convert to fraction form
   9,931.58/13,704.76 = 5,455.10/x
3. Step 3: Cross multiply
   9,931.58x = 13,704.76 × 5,455.10
4. Step 4: Simplify right side
   9,931.58x = 74,760,754.11
5. Step 5: Solve for x
   x = 74,760,754.11/9,931.58
6. Step 6: Final answer
   x = 7,527.58