Finding the Fourth Proportional to 8,748.28, 12,070.23 and 5,555.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.28 : 12,070.23 = 5,555.89 : x
2. Step 2: Convert to fraction form
   8,748.28/12,070.23 = 5,555.89/x
3. Step 3: Cross multiply
   8,748.28x = 12,070.23 × 5,555.89
4. Step 4: Simplify right side
   8,748.28x = 67,060,870.15
5. Step 5: Solve for x
   x = 67,060,870.15/8,748.28
6. Step 6: Final answer
   x = 7,665.61