Finding the Fourth Proportional to 9,486.06, 13,090.86 and 5,505.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,486.06 : 13,090.86 = 5,505.72 : x
2. Step 2: Convert to fraction form
   9,486.06/13,090.86 = 5,505.72/x
3. Step 3: Cross multiply
   9,486.06x = 13,090.86 × 5,505.72
4. Step 4: Simplify right side
   9,486.06x = 72,074,609.72
5. Step 5: Solve for x
   x = 72,074,609.72/9,486.06
6. Step 6: Final answer
   x = 7,597.95