Finding the Fourth Proportional to 10,385.89, 14,331.74 and 5,670.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.89 : 14,331.74 = 5,670.17 : x
2. Step 2: Convert to fraction form
   10,385.89/14,331.74 = 5,670.17/x
3. Step 3: Cross multiply
   10,385.89x = 14,331.74 × 5,670.17
4. Step 4: Simplify right side
   10,385.89x = 81,263,355.93
5. Step 5: Solve for x
   x = 81,263,355.93/10,385.89
6. Step 6: Final answer
   x = 7,824.40