Finding the Fourth Proportional to 9,725.34, 13,420.18 and 5,475.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,725.34 : 13,420.18 = 5,475.05 : x
2. Step 2: Convert to fraction form
   9,725.34/13,420.18 = 5,475.05/x
3. Step 3: Cross multiply
   9,725.34x = 13,420.18 × 5,475.05
4. Step 4: Simplify right side
   9,725.34x = 73,476,156.51
5. Step 5: Solve for x
   x = 73,476,156.51/9,725.34
6. Step 6: Final answer
   x = 7,555.12