Finding the Fourth Proportional to 12,974,216.72, 17,904,792.83 and 7,173,372.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,974,216.72 : 17,904,792.83 = 7,173,372.96 : x
2. Step 2: Convert to fraction form
   12,974,216.72/17,904,792.83 = 7,173,372.96/x
3. Step 3: Cross multiply
   12,974,216.72x = 17,904,792.83 × 7,173,372.96
4. Step 4: Simplify right side
   12,974,216.72x = 128,437,756,705,257
5. Step 5: Solve for x
   x = 128,437,756,705,257/12,974,216.72
6. Step 6: Final answer
   x = 9,899,461.33