Finding the Fourth Proportional to 21,300,276.18, 29,408,555.61 and 12,601,235.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,300,276.18 : 29,408,555.61 = 12,601,235.82 : x
2. Step 2: Convert to fraction form
   21,300,276.18/29,408,555.61 = 12,601,235.82/x
3. Step 3: Cross multiply
   21,300,276.18x = 29,408,555.61 × 12,601,235.82
4. Step 4: Simplify right side
   21,300,276.18x = 370,584,144,367,193.94
5. Step 5: Solve for x
   x = 370,584,144,367,193.94/21,300,276.18
6. Step 6: Final answer
   x = 17,398,091.05