Finding the Fourth Proportional to 21,153,144.61, 31,732,541.57 and 8,370,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,153,144.61 : 31,732,541.57 = 8,370,659.98 : x
2. Step 2: Convert to fraction form
   21,153,144.61/31,732,541.57 = 8,370,659.98/x
3. Step 3: Cross multiply
   21,153,144.61x = 31,732,541.57 × 8,370,659.98
4. Step 4: Simplify right side
   21,153,144.61x = 265,622,315,783,685.38
5. Step 5: Solve for x
   x = 265,622,315,783,685.38/21,153,144.61
6. Step 6: Final answer
   x = 12,557,107.73