Finding the Fourth Proportional to 12,953.66, 17,877.44 and 7,920.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,953.66 : 17,877.44 = 7,920.83 : x
2. Step 2: Convert to fraction form
   12,953.66/17,877.44 = 7,920.83/x
3. Step 3: Cross multiply
   12,953.66x = 17,877.44 × 7,920.83
4. Step 4: Simplify right side
   12,953.66x = 141,604,123.47
5. Step 5: Solve for x
   x = 141,604,123.47/12,953.66
6. Step 6: Final answer
   x = 10,931.59