Finding the Fourth Proportional to 9,947.34, 13,726.91 and 5,470.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.34 : 13,726.91 = 5,470.80 : x
2. Step 2: Convert to fraction form
   9,947.34/13,726.91 = 5,470.80/x
3. Step 3: Cross multiply
   9,947.34x = 13,726.91 × 5,470.80
4. Step 4: Simplify right side
   9,947.34x = 75,097,203.35
5. Step 5: Solve for x
   x = 75,097,203.35/9,947.34
6. Step 6: Final answer
   x = 7,549.48