Finding the Fourth Proportional to 13,378.58, 20,071.92 and 5,061.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,378.58 : 20,071.92 = 5,061.15 : x
2. Step 2: Convert to fraction form
   13,378.58/20,071.92 = 5,061.15/x
3. Step 3: Cross multiply
   13,378.58x = 20,071.92 × 5,061.15
4. Step 4: Simplify right side
   13,378.58x = 101,587,016.89
5. Step 5: Solve for x
   x = 101,587,016.89/13,378.58
6. Step 6: Final answer
   x = 7,593.26