Finding the Fourth Proportional to 9,821.71, 13,553.60 and 5,345.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.71 : 13,553.60 = 5,345.37 : x
2. Step 2: Convert to fraction form
   9,821.71/13,553.60 = 5,345.37/x
3. Step 3: Cross multiply
   9,821.71x = 13,553.60 × 5,345.37
4. Step 4: Simplify right side
   9,821.71x = 72,448,987.09
5. Step 5: Solve for x
   x = 72,448,987.09/9,821.71
6. Step 6: Final answer
   x = 7,376.41