Finding the Fourth Proportional to 13,013.04, 19,516.65 and 5,986.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.04 : 19,516.65 = 5,986.31 : x
2. Step 2: Convert to fraction form
   13,013.04/19,516.65 = 5,986.31/x
3. Step 3: Cross multiply
   13,013.04x = 19,516.65 × 5,986.31
4. Step 4: Simplify right side
   13,013.04x = 116,832,638.34
5. Step 5: Solve for x
   x = 116,832,638.34/13,013.04
6. Step 6: Final answer
   x = 8,978.12