Finding the Fourth Proportional to 9,007.12, 13,488.72 and 5,099.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.12 : 13,488.72 = 5,099.68 : x
2. Step 2: Convert to fraction form
   9,007.12/13,488.72 = 5,099.68/x
3. Step 3: Cross multiply
   9,007.12x = 13,488.72 × 5,099.68
4. Step 4: Simplify right side
   9,007.12x = 68,788,155.61
5. Step 5: Solve for x
   x = 68,788,155.61/9,007.12
6. Step 6: Final answer
   x = 7,637.09