Finding the Fourth Proportional to 10,016.85, 13,807.35 and 7,889.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,016.85 : 13,807.35 = 7,889.01 : x
2. Step 2: Convert to fraction form
   10,016.85/13,807.35 = 7,889.01/x
3. Step 3: Cross multiply
   10,016.85x = 13,807.35 × 7,889.01
4. Step 4: Simplify right side
   10,016.85x = 108,926,322.22
5. Step 5: Solve for x
   x = 108,926,322.22/10,016.85
6. Step 6: Final answer
   x = 10,874.31