Finding the Fourth Proportional to 21,426,456.42, 32,131,459.89 and 9,122,618.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,426,456.42 : 32,131,459.89 = 9,122,618.79 : x
2. Step 2: Convert to fraction form
   21,426,456.42/32,131,459.89 = 9,122,618.79/x
3. Step 3: Cross multiply
   21,426,456.42x = 32,131,459.89 × 9,122,618.79
4. Step 4: Simplify right side
   21,426,456.42x = 293,123,059,742,645.31
5. Step 5: Solve for x
   x = 293,123,059,742,645.31/21,426,456.42
6. Step 6: Final answer
   x = 13,680,426.38