Finding the Fourth Proportional to 9,486.83, 13,091.10 and 5,507.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,486.83 : 13,091.10 = 5,507.30 : x
2. Step 2: Convert to fraction form
   9,486.83/13,091.10 = 5,507.30/x
3. Step 3: Cross multiply
   9,486.83x = 13,091.10 × 5,507.30
4. Step 4: Simplify right side
   9,486.83x = 72,096,615.03
5. Step 5: Solve for x
   x = 72,096,615.03/9,486.83
6. Step 6: Final answer
   x = 7,599.65