Finding the Fourth Proportional to 12,868.89, 19,303.35 and 5,077.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.89 : 19,303.35 = 5,077.50 : x
2. Step 2: Convert to fraction form
   12,868.89/19,303.35 = 5,077.50/x
3. Step 3: Cross multiply
   12,868.89x = 19,303.35 × 5,077.50
4. Step 4: Simplify right side
   12,868.89x = 98,012,759.63
5. Step 5: Solve for x
   x = 98,012,759.63/12,868.89
6. Step 6: Final answer
   x = 7,616.26