Finding the Fourth Proportional to 13,035.58, 17,987.94 and 7,729.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,035.58 : 17,987.94 = 7,729.54 : x
2. Step 2: Convert to fraction form
   13,035.58/17,987.94 = 7,729.54/x
3. Step 3: Cross multiply
   13,035.58x = 17,987.94 × 7,729.54
4. Step 4: Simplify right side
   13,035.58x = 139,038,501.75
5. Step 5: Solve for x
   x = 139,038,501.75/13,035.58
6. Step 6: Final answer
   x = 10,666.08