Finding the Fourth Proportional to 19,815,123.15, 27,333,256.82 and 12,461,291.91

Step by Step Solution

1. Step 1: Write the proportion equation
   19,815,123.15 : 27,333,256.82 = 12,461,291.91 : x
2. Step 2: Convert to fraction form
   19,815,123.15/27,333,256.82 = 12,461,291.91/x
3. Step 3: Cross multiply
   19,815,123.15x = 27,333,256.82 × 12,461,291.91
4. Step 4: Simplify right side
   19,815,123.15x = 340,607,692,022,711.88
5. Step 5: Solve for x
   x = 340,607,692,022,711.88/19,815,123.15
6. Step 6: Final answer
   x = 17,189,279.59