Finding the Fourth Proportional to 13,267.72, 19,904.42 and 4,947.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,267.72 : 19,904.42 = 4,947.81 : x
2. Step 2: Convert to fraction form
   13,267.72/19,904.42 = 4,947.81/x
3. Step 3: Cross multiply
   13,267.72x = 19,904.42 × 4,947.81
4. Step 4: Simplify right side
   13,267.72x = 98,483,288.32
5. Step 5: Solve for x
   x = 98,483,288.32/13,267.72
6. Step 6: Final answer
   x = 7,422.77