Finding the Fourth Proportional to 10,076.61, 13,905.91 and 5,600.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,076.61 : 13,905.91 = 5,600.55 : x
2. Step 2: Convert to fraction form
   10,076.61/13,905.91 = 5,600.55/x
3. Step 3: Cross multiply
   10,076.61x = 13,905.91 × 5,600.55
4. Step 4: Simplify right side
   10,076.61x = 77,880,744.25
5. Step 5: Solve for x
   x = 77,880,744.25/10,076.61
6. Step 6: Final answer
   x = 7,728.86