Finding the Fourth Proportional to 11,501.01, 15,870.78 and 6,465.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,501.01 : 15,870.78 = 6,465.42 : x
2. Step 2: Convert to fraction form
   11,501.01/15,870.78 = 6,465.42/x
3. Step 3: Cross multiply
   11,501.01x = 15,870.78 × 6,465.42
4. Step 4: Simplify right side
   11,501.01x = 102,611,258.43
5. Step 5: Solve for x
   x = 102,611,258.43/11,501.01
6. Step 6: Final answer
   x = 8,921.93