Finding the Fourth Proportional to 11,870.10, 16,375.59 and 7,151.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.10 : 16,375.59 = 7,151.67 : x
2. Step 2: Convert to fraction form
   11,870.10/16,375.59 = 7,151.67/x
3. Step 3: Cross multiply
   11,870.10x = 16,375.59 × 7,151.67
4. Step 4: Simplify right side
   11,870.10x = 117,112,815.74
5. Step 5: Solve for x
   x = 117,112,815.74/11,870.10
6. Step 6: Final answer
   x = 9,866.20