Finding the Fourth Proportional to 12,980.87, 17,901.83 and 8,502.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.87 : 17,901.83 = 8,502.98 : x
2. Step 2: Convert to fraction form
   12,980.87/17,901.83 = 8,502.98/x
3. Step 3: Cross multiply
   12,980.87x = 17,901.83 × 8,502.98
4. Step 4: Simplify right side
   12,980.87x = 152,218,968.47
5. Step 5: Solve for x
   x = 152,218,968.47/12,980.87
6. Step 6: Final answer
   x = 11,726.41