Finding the Fourth Proportional to 21,856,507.94, 30,164,625.82 and 12,439,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856,507.94 : 30,164,625.82 = 12,439,588.50 : x
2. Step 2: Convert to fraction form
   21,856,507.94/30,164,625.82 = 12,439,588.50/x
3. Step 3: Cross multiply
   21,856,507.94x = 30,164,625.82 × 12,439,588.50
4. Step 4: Simplify right side
   21,856,507.94x = 375,235,532,457,275.06
5. Step 5: Solve for x
   x = 375,235,532,457,275.06/21,856,507.94
6. Step 6: Final answer
   x = 17,168,137.45