Finding the Fourth Proportional to 13,263.54, 19,900.56 and 5,470.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,263.54 : 19,900.56 = 5,470.56 : x
2. Step 2: Convert to fraction form
   13,263.54/19,900.56 = 5,470.56/x
3. Step 3: Cross multiply
   13,263.54x = 19,900.56 × 5,470.56
4. Step 4: Simplify right side
   13,263.54x = 108,867,207.51
5. Step 5: Solve for x
   x = 108,867,207.51/13,263.54
6. Step 6: Final answer
   x = 8,208.01