Finding the Fourth Proportional to 8,071.56, 12,115.82 and 7,153

Step by Step Solution

1. Step 1: Write the proportion equation
   8,071.56 : 12,115.82 = 7,153 : x
2. Step 2: Convert to fraction form
   8,071.56/12,115.82 = 7,153/x
3. Step 3: Cross multiply
   8,071.56x = 12,115.82 × 7,153
4. Step 4: Simplify right side
   8,071.56x = 86,664,460.46
5. Step 5: Solve for x
   x = 86,664,460.46/8,071.56
6. Step 6: Final answer
   x = 10,737.01