Finding the Fourth Proportional to 10,151.55, 15,210.86 and 5,214.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,151.55 : 15,210.86 = 5,214.33 : x
2. Step 2: Convert to fraction form
   10,151.55/15,210.86 = 5,214.33/x
3. Step 3: Cross multiply
   10,151.55x = 15,210.86 × 5,214.33
4. Step 4: Simplify right side
   10,151.55x = 79,314,417.55
5. Step 5: Solve for x
   x = 79,314,417.55/10,151.55
6. Step 6: Final answer
   x = 7,813.04