Finding the Fourth Proportional to 13,250.56, 19,879.04 and 4,931.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,250.56 : 19,879.04 = 4,931.20 : x
2. Step 2: Convert to fraction form
   13,250.56/19,879.04 = 4,931.20/x
3. Step 3: Cross multiply
   13,250.56x = 19,879.04 × 4,931.20
4. Step 4: Simplify right side
   13,250.56x = 98,027,522.05
5. Step 5: Solve for x
   x = 98,027,522.05/13,250.56
6. Step 6: Final answer
   x = 7,397.99