Finding the Fourth Proportional to 13,021.32, 19,505.86 and 5,991.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021.32 : 19,505.86 = 5,991.54 : x
2. Step 2: Convert to fraction form
   13,021.32/19,505.86 = 5,991.54/x
3. Step 3: Cross multiply
   13,021.32x = 19,505.86 × 5,991.54
4. Step 4: Simplify right side
   13,021.32x = 116,870,140.42
5. Step 5: Solve for x
   x = 116,870,140.42/13,021.32
6. Step 6: Final answer
   x = 8,975.29