Finding the Fourth Proportional to 21,910,726.77, 30,227,298.42 and 13,203,951.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,910,726.77 : 30,227,298.42 = 13,203,951.72 : x
2. Step 2: Convert to fraction form
   21,910,726.77/30,227,298.42 = 13,203,951.72/x
3. Step 3: Cross multiply
   21,910,726.77x = 30,227,298.42 × 13,203,951.72
4. Step 4: Simplify right side
   21,910,726.77x = 399,119,788,963,712.31
5. Step 5: Solve for x
   x = 399,119,788,963,712.31/21,910,726.77
6. Step 6: Final answer
   x = 18,215,725.71