Finding the Fourth Proportional to 10,345.86, 15,518.61 and 3,771.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,345.86 : 15,518.61 = 3,771.99 : x
2. Step 2: Convert to fraction form
   10,345.86/15,518.61 = 3,771.99/x
3. Step 3: Cross multiply
   10,345.86x = 15,518.61 × 3,771.99
4. Step 4: Simplify right side
   10,345.86x = 58,536,041.73
5. Step 5: Solve for x
   x = 58,536,041.73/10,345.86
6. Step 6: Final answer
   x = 5,657.92