Finding the Fourth Proportional to 13,041.81, 17,991.72 and 7,734.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,041.81 : 17,991.72 = 7,734.69 : x
2. Step 2: Convert to fraction form
   13,041.81/17,991.72 = 7,734.69/x
3. Step 3: Cross multiply
   13,041.81x = 17,991.72 × 7,734.69
4. Step 4: Simplify right side
   13,041.81x = 139,160,376.77
5. Step 5: Solve for x
   x = 139,160,376.77/13,041.81
6. Step 6: Final answer
   x = 10,670.33