Finding the Fourth Proportional to 9,485.87, 13,090.29 and 5,506.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,485.87 : 13,090.29 = 5,506.88 : x
2. Step 2: Convert to fraction form
   9,485.87/13,090.29 = 5,506.88/x
3. Step 3: Cross multiply
   9,485.87x = 13,090.29 × 5,506.88
4. Step 4: Simplify right side
   9,485.87x = 72,086,656.20
5. Step 5: Solve for x
   x = 72,086,656.20/9,485.87
6. Step 6: Final answer
   x = 7,599.37