Finding the Fourth Proportional to 21,696,314.76, 29,938,935.54 and 12,874,245.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,696,314.76 : 29,938,935.54 = 12,874,245.93 : x
2. Step 2: Convert to fraction form
   21,696,314.76/29,938,935.54 = 12,874,245.93/x
3. Step 3: Cross multiply
   21,696,314.76x = 29,938,935.54 × 12,874,245.93
4. Step 4: Simplify right side
   21,696,314.76x = 385,441,219,024,377.31
5. Step 5: Solve for x
   x = 385,441,219,024,377.31/21,696,314.76
6. Step 6: Final answer
   x = 17,765,285.18