Finding the Fourth Proportional to 21,684,774.61, 29,924,709.78 and 12,392,238.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,684,774.61 : 29,924,709.78 = 12,392,238.27 : x
2. Step 2: Convert to fraction form
   21,684,774.61/29,924,709.78 = 12,392,238.27/x
3. Step 3: Cross multiply
   21,684,774.61x = 29,924,709.78 × 12,392,238.27
4. Step 4: Simplify right side
   21,684,774.61x = 370,834,133,754,359.31
5. Step 5: Solve for x
   x = 370,834,133,754,359.31/21,684,774.61
6. Step 6: Final answer
   x = 17,101,129.27