Finding the Fourth Proportional to 13,069.80, 18,038.95 and 7,763.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,069.80 : 18,038.95 = 7,763.59 : x
2. Step 2: Convert to fraction form
   13,069.80/18,038.95 = 7,763.59/x
3. Step 3: Cross multiply
   13,069.80x = 18,038.95 × 7,763.59
4. Step 4: Simplify right side
   13,069.80x = 140,047,011.83
5. Step 5: Solve for x
   x = 140,047,011.83/13,069.80
6. Step 6: Final answer
   x = 10,715.31