Finding the Fourth Proportional to 31,075.80, 42,886.62 and 18,498.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,075.80 : 42,886.62 = 18,498.84 : x
2. Step 2: Convert to fraction form
   31,075.80/42,886.62 = 18,498.84/x
3. Step 3: Cross multiply
   31,075.80x = 42,886.62 × 18,498.84
4. Step 4: Simplify right side
   31,075.80x = 793,352,721.52
5. Step 5: Solve for x
   x = 793,352,721.52/31,075.80
6. Step 6: Final answer
   x = 25,529.60