Finding the Fourth Proportional to 10,071.82, 15,106.50 and 5,145.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071.82 : 15,106.50 = 5,145.01 : x
2. Step 2: Convert to fraction form
   10,071.82/15,106.50 = 5,145.01/x
3. Step 3: Cross multiply
   10,071.82x = 15,106.50 × 5,145.01
4. Step 4: Simplify right side
   10,071.82x = 77,723,093.57
5. Step 5: Solve for x
   x = 77,723,093.57/10,071.82
6. Step 6: Final answer
   x = 7,716.89