Finding the Fourth Proportional to 12,771,746.58, 19,140,985.71 and 5,189,848.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,771,746.58 : 19,140,985.71 = 5,189,848.50 : x
2. Step 2: Convert to fraction form
   12,771,746.58/19,140,985.71 = 5,189,848.50/x
3. Step 3: Cross multiply
   12,771,746.58x = 19,140,985.71 × 5,189,848.50
4. Step 4: Simplify right side
   12,771,746.58x = 99,338,815,975,564.94
5. Step 5: Solve for x
   x = 99,338,815,975,564.94/12,771,746.58
6. Step 6: Final answer
   x = 7,778,013.39