Finding the Fourth Proportional to 10,056.68, 13,878.28 and 5,580.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,056.68 : 13,878.28 = 5,580.51 : x
2. Step 2: Convert to fraction form
   10,056.68/13,878.28 = 5,580.51/x
3. Step 3: Cross multiply
   10,056.68x = 13,878.28 × 5,580.51
4. Step 4: Simplify right side
   10,056.68x = 77,447,835.25
5. Step 5: Solve for x
   x = 77,447,835.25/10,056.68
6. Step 6: Final answer
   x = 7,701.13