Finding the Fourth Proportional to 12,554.69, 17,321.13 and 8,782.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,554.69 : 17,321.13 = 8,782.11 : x
2. Step 2: Convert to fraction form
   12,554.69/17,321.13 = 8,782.11/x
3. Step 3: Cross multiply
   12,554.69x = 17,321.13 × 8,782.11
4. Step 4: Simplify right side
   12,554.69x = 152,116,068.98
5. Step 5: Solve for x
   x = 152,116,068.98/12,554.69
6. Step 6: Final answer
   x = 12,116.28