Finding the Fourth Proportional to 7,899.50, 10,901.45 and 5,109.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,899.50 : 10,901.45 = 5,109.86 : x
2. Step 2: Convert to fraction form
   7,899.50/10,901.45 = 5,109.86/x
3. Step 3: Cross multiply
   7,899.50x = 10,901.45 × 5,109.86
4. Step 4: Simplify right side
   7,899.50x = 55,704,883.30
5. Step 5: Solve for x
   x = 55,704,883.30/7,899.50
6. Step 6: Final answer
   x = 7,051.70