Finding the Fourth Proportional to 10,427.06, 14,389.35 and 5,711.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427.06 : 14,389.35 = 5,711.51 : x
2. Step 2: Convert to fraction form
   10,427.06/14,389.35 = 5,711.51/x
3. Step 3: Cross multiply
   10,427.06x = 14,389.35 × 5,711.51
4. Step 4: Simplify right side
   10,427.06x = 82,184,952.39
5. Step 5: Solve for x
   x = 82,184,952.39/10,427.06
6. Step 6: Final answer
   x = 7,881.89