Finding the Fourth Proportional to 10,078.72, 13,908.38 and 5,602.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.72 : 13,908.38 = 5,602.86 : x
2. Step 2: Convert to fraction form
   10,078.72/13,908.38 = 5,602.86/x
3. Step 3: Cross multiply
   10,078.72x = 13,908.38 × 5,602.86
4. Step 4: Simplify right side
   10,078.72x = 77,926,677.95
5. Step 5: Solve for x
   x = 77,926,677.95/10,078.72
6. Step 6: Final answer
   x = 7,731.80