Finding the Fourth Proportional to 11,870.81, 16,386.76 and 7,396.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.81 : 16,386.76 = 7,396.77 : x
2. Step 2: Convert to fraction form
   11,870.81/16,386.76 = 7,396.77/x
3. Step 3: Cross multiply
   11,870.81x = 16,386.76 × 7,396.77
4. Step 4: Simplify right side
   11,870.81x = 121,209,119.37
5. Step 5: Solve for x
   x = 121,209,119.37/11,870.81
6. Step 6: Final answer
   x = 10,210.69