Finding the Fourth Proportional to 31,525.83, 47,247.86 and 12,783.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,525.83 : 47,247.86 = 12,783.98 : x
2. Step 2: Convert to fraction form
   31,525.83/47,247.86 = 12,783.98/x
3. Step 3: Cross multiply
   31,525.83x = 47,247.86 × 12,783.98
4. Step 4: Simplify right side
   31,525.83x = 604,015,397.12
5. Step 5: Solve for x
   x = 604,015,397.12/31,525.83
6. Step 6: Final answer
   x = 19,159.38