Finding the Fourth Proportional to 9,486.78, 13,090.86 and 5,294.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,486.78 : 13,090.86 = 5,294.76 : x
2. Step 2: Convert to fraction form
   9,486.78/13,090.86 = 5,294.76/x
3. Step 3: Cross multiply
   9,486.78x = 13,090.86 × 5,294.76
4. Step 4: Simplify right side
   9,486.78x = 69,312,961.89
5. Step 5: Solve for x
   x = 69,312,961.89/9,486.78
6. Step 6: Final answer
   x = 7,306.27