Finding the Fourth Proportional to 8,628.77, 11,904.89 and 5,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,628.77 : 11,904.89 = 5,091.30 : x
2. Step 2: Convert to fraction form
   8,628.77/11,904.89 = 5,091.30/x
3. Step 3: Cross multiply
   8,628.77x = 11,904.89 × 5,091.30
4. Step 4: Simplify right side
   8,628.77x = 60,611,341.00
5. Step 5: Solve for x
   x = 60,611,341.00/8,628.77
6. Step 6: Final answer
   x = 7,024.34