Finding the Fourth Proportional to 10,056.53, 13,878.11 and 5,580.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,056.53 : 13,878.11 = 5,580.70 : x
2. Step 2: Convert to fraction form
   10,056.53/13,878.11 = 5,580.70/x
3. Step 3: Cross multiply
   10,056.53x = 13,878.11 × 5,580.70
4. Step 4: Simplify right side
   10,056.53x = 77,449,479.86
5. Step 5: Solve for x
   x = 77,449,479.86/10,056.53
6. Step 6: Final answer
   x = 7,701.41