Finding the Fourth Proportional to 21,680,111.30, 32,523,141.26 and 12,586,477.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,680,111.30 : 32,523,141.26 = 12,586,477.82 : x
2. Step 2: Convert to fraction form
   21,680,111.30/32,523,141.26 = 12,586,477.82/x
3. Step 3: Cross multiply
   21,680,111.30x = 32,523,141.26 × 12,586,477.82
4. Step 4: Simplify right side
   21,680,111.30x = 409,351,795,974,567.31
5. Step 5: Solve for x
   x = 409,351,795,974,567.31/21,680,111.30
6. Step 6: Final answer
   x = 18,881,443.48