Finding the Fourth Proportional to 8,459.98, 11,670.86 and 5,476.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,459.98 : 11,670.86 = 5,476.78 : x
2. Step 2: Convert to fraction form
   8,459.98/11,670.86 = 5,476.78/x
3. Step 3: Cross multiply
   8,459.98x = 11,670.86 × 5,476.78
4. Step 4: Simplify right side
   8,459.98x = 63,918,646.89
5. Step 5: Solve for x
   x = 63,918,646.89/8,459.98
6. Step 6: Final answer
   x = 7,555.42