Finding the Fourth Proportional to 8,428.89, 11,632.23 and 5,071.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,428.89 : 11,632.23 = 5,071.98 : x
2. Step 2: Convert to fraction form
   8,428.89/11,632.23 = 5,071.98/x
3. Step 3: Cross multiply
   8,428.89x = 11,632.23 × 5,071.98
4. Step 4: Simplify right side
   8,428.89x = 58,998,437.92
5. Step 5: Solve for x
   x = 58,998,437.92/8,428.89
6. Step 6: Final answer
   x = 6,999.55