Finding the Fourth Proportional to 10,066.80, 13,892.31 and 5,590.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,066.80 : 13,892.31 = 5,590.83 : x
2. Step 2: Convert to fraction form
   10,066.80/13,892.31 = 5,590.83/x
3. Step 3: Cross multiply
   10,066.80x = 13,892.31 × 5,590.83
4. Step 4: Simplify right side
   10,066.80x = 77,669,543.52
5. Step 5: Solve for x
   x = 77,669,543.52/10,066.80
6. Step 6: Final answer
   x = 7,715.42