Finding the Fourth Proportional to 9,448.77, 13,039.37 and 5,199.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,448.77 : 13,039.37 = 5,199.72 : x
2. Step 2: Convert to fraction form
   9,448.77/13,039.37 = 5,199.72/x
3. Step 3: Cross multiply
   9,448.77x = 13,039.37 × 5,199.72
4. Step 4: Simplify right side
   9,448.77x = 67,801,072.98
5. Step 5: Solve for x
   x = 67,801,072.98/9,448.77
6. Step 6: Final answer
   x = 7,175.65