Finding the Fourth Proportional to 13,051.38, 19,580.72 and 5,149.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,051.38 : 19,580.72 = 5,149.02 : x
2. Step 2: Convert to fraction form
   13,051.38/19,580.72 = 5,149.02/x
3. Step 3: Cross multiply
   13,051.38x = 19,580.72 × 5,149.02
4. Step 4: Simplify right side
   13,051.38x = 100,821,518.89
5. Step 5: Solve for x
   x = 100,821,518.89/13,051.38
6. Step 6: Final answer
   x = 7,724.97