Finding the Fourth Proportional to 13,041.17, 17,999.31 and 7,738.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,041.17 : 17,999.31 = 7,738.91 : x
2. Step 2: Convert to fraction form
   13,041.17/17,999.31 = 7,738.91/x
3. Step 3: Cross multiply
   13,041.17x = 17,999.31 × 7,738.91
4. Step 4: Simplify right side
   13,041.17x = 139,295,040.15
5. Step 5: Solve for x
   x = 139,295,040.15/13,041.17
6. Step 6: Final answer
   x = 10,681.18