Finding the Fourth Proportional to 35,726.86, 53,592.72 and 12,355.12

Step by Step Solution

1. Step 1: Write the proportion equation
   35,726.86 : 53,592.72 = 12,355.12 : x
2. Step 2: Convert to fraction form
   35,726.86/53,592.72 = 12,355.12/x
3. Step 3: Cross multiply
   35,726.86x = 53,592.72 × 12,355.12
4. Step 4: Simplify right side
   35,726.86x = 662,144,486.73
5. Step 5: Solve for x
   x = 662,144,486.73/35,726.86
6. Step 6: Final answer
   x = 18,533.52