Finding the Fourth Proportional to 9,348.48, 12,900.91 and 5,099.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,348.48 : 12,900.91 = 5,099.55 : x
2. Step 2: Convert to fraction form
   9,348.48/12,900.91 = 5,099.55/x
3. Step 3: Cross multiply
   9,348.48x = 12,900.91 × 5,099.55
4. Step 4: Simplify right side
   9,348.48x = 65,788,835.59
5. Step 5: Solve for x
   x = 65,788,835.59/9,348.48
6. Step 6: Final answer
   x = 7,037.38