Finding the Fourth Proportional to 35,112.34, 52,663.33 and 12,920.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,112.34 : 52,663.33 = 12,920.56 : x
2. Step 2: Convert to fraction form
   35,112.34/52,663.33 = 12,920.56/x
3. Step 3: Cross multiply
   35,112.34x = 52,663.33 × 12,920.56
4. Step 4: Simplify right side
   35,112.34x = 680,439,715.06
5. Step 5: Solve for x
   x = 680,439,715.06/35,112.34
6. Step 6: Final answer
   x = 19,378.93