Finding the Fourth Proportional to 17,776.85, 26,666.18 and 7,916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   17,776.85 : 26,666.18 = 7,916.82 : x
2. Step 2: Convert to fraction form
   17,776.85/26,666.18 = 7,916.82/x
3. Step 3: Cross multiply
   17,776.85x = 26,666.18 × 7,916.82
4. Step 4: Simplify right side
   17,776.85x = 211,111,307.56
5. Step 5: Solve for x
   x = 211,111,307.56/17,776.85
6. Step 6: Final answer
   x = 11,875.63