Finding the Fourth Proportional to 12,887,086.88, 19,338,168.18 and 4,805,645.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887,086.88 : 19,338,168.18 = 4,805,645.60 : x
2. Step 2: Convert to fraction form
   12,887,086.88/19,338,168.18 = 4,805,645.60/x
3. Step 3: Cross multiply
   12,887,086.88x = 19,338,168.18 × 4,805,645.60
4. Step 4: Simplify right side
   12,887,086.88x = 92,932,382,826,277
5. Step 5: Solve for x
   x = 92,932,382,826,277/12,887,086.88
6. Step 6: Final answer
   x = 7,211,279.30